The URL can be used to link to this page

Home My WebLink AboutDERR-2024-005556Response to UDEQ DERR Comments December 18, 2023 Correction Action Plan for Monitored Natural Attenuation Page 1 of 2 Response to Comments on Correction Action Plan for Monitored Natural Attenuation Linde, Inc., Magna, Utah, Facility ID #4002146, Release Site GAC Document Date: May 2023 Comment Date: December 18, 2023 Reviewer: Liberty Coe, Utah Department of Environmental Quality Respondent: Paul Bauer, P.G. and William Gould, Ph.D., P.G., APTIM 1. Respondent Concurs (C), Does Not Concur (D), Takes Exception (E), or Delete (X) 2. Commenter Agrees (A) with response, or Does Not Agree (D) with response Comment No. Comment C, D, E, or X1 Response A or D2 1 An updated groundwater sampling schedule. Groundwater should be sampled at least every 16 – 18 months. This interval allows for seasonal variations in contamination levels to be observed. C Linde concurs and proposes groundwater monitoring and sampling every 15 months. 2 Demonstrate that the extent and degree of the contamination are defined, and estimate the contaminant mass in the source area by providing the following figures along with a brief discussion of the implications: --- --- --- 2 a. Contaminant iso-concentration contour maps showing the estimated extent of soil contamination. Maps of the initial soil concentrations and final soil concentrations should be prepared. E See Figure 6. Too few samples, too much scatter in the results for meaningful contouring. 2 b. Contaminant iso-concentration contour maps showing the extent of dissolved contaminant concentrations (see Figures 2 and 3 of attached Appendix). C See Figure 7 through Figure 17. 2 c. Hydrographs that plot depth to groundwater and corresponding contaminant concentrations over time for a minimum of all centerline wells (see Figures 4 and 5 of attached Appendix). Show the zone and constituent concentrations of soil contamination on the hydrograph. C See Figure 19 through Figure 24. Soil Contamination is shown on Figure 6 Response to UDEQ DERR Comments December 18, 2023 Correction Action Plan for Monitored Natural Attenuation Page 2 of 2 Comment No. Comment C, D, E, or X1 Response A or D2 3 Groundwater Contaminant Mass Reduction Calculations: --- --- --- 3 a. Use contaminant iso-concentration contour maps to demonstrate a reduction in dissolved phase contaminant mass. Quantify this mass reduction by calculating the dissolved contaminant mass based on the contour maps for two or more separate sampling events and submit the calculations. The mass calculated for the most recent event must be lower than the mass of any earlier events to demonstrate mass reduction and effective natural attenuation. C See Tables 6 and 7, Figure 7 through 18 3 b. In addition to commercially available software, the DERR has prepared spreadsheets that may be used to complete mass calculations. These spreadsheets are located in the LUST Program section of the DERR website for MNA. E APTIM used their own spreadsheets to complete mass calculations. See Tables 6 and 7. 4 Empirical Data Trend Extrapolation: Concentration vs. Time: --- --- --- 4 a. For each contaminated well, create a concentration vs. time plot in order to calculate a first-order contaminant decay rate (k) for each Contaminant of concern that exceeds the DERR cleanup levels. This decay rate is most easily calculated using a linear or logarithmic regression. A negative decay rate indicates a decreasing concentration trend. C See Figures 25 through 30. 4 b. Provide data tables, plots, and calculations to verify and support results. In addition, report statistical correlation coefficients (R2) for each regression conducted. C See Table 8, Figures 25 through Figure 30, and Appendix C 4 c. If the calculated decay rate confirms a decreasing contaminant concentration trend, use the equation provided in the attached Appendix to determine a predicted time to achieve cleanup levels. C See Section 5.3, Figure 25 through Figure 30, and Table 8. 4 d. Report the predicted time to achieve cleanup goals for each well. This will be the time required for the most recalcitrant compound in each well to reach its associated cleanup goal. C See Section 5.3. 5 a. Technological and Economic Feasibility: Provide a brief discussion on why MNA is the most technologically and economically feasible clean up route for this site. Explain why active cleanup is not viable at this facility. C See Section 7.0. CORRECTIVE ACTION PLAN FOR MONITORED NATURAL ATTENUATION Linde Inc. (Former Union Carbide Corporation, Linde Division) 12385 West U.S. Highway Alternate 40 Magna, Utah 84044 Facility ID 4002146; Leak ID GAC Prepared for: Linde Inc. P.O. Box 808 Tonawanda, New York 14151-0808 Submitted to: Ms. Liberty Coe Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West Salt Lake City, Utah 84114-4840 Submitted by: Aptim Environmental & Infrastructure, LLC 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 Project No. 631034161 May 2023 Revised March 2024 ii Table of Contents ________________________________________________ List of Tables ................................................................................................................................................. iv List of Figures ................................................................................................................................................ iv List of Appendices ......................................................................................................................................... v List of Acronyms & Abbreviations .................................................................................................................. vi 1.0 Narrative ............................................................................................................................................ 1 1.1 Site Description ....................................................................................................................... 1 1.2 Site Background ...................................................................................................................... 1 1.3 Site Geology and Hydrogeology .............................................................................................. 3 2.0 Nature and Extent of Impacts............................................................................................................. 4 2.1 Historic Sources of Impacts ..................................................................................................... 4 2.2 Soil Impacts ............................................................................................................................. 4 2.3 Light Non-Aqueous Phase Liquid ............................................................................................ 5 2.4 Dissolved Phase Hydrocarbon Impacts ................................................................................... 5 3.0 Groundwater Plume Stability.............................................................................................................. 6 3.1 On-Site Downgradient Wells ................................................................................................... 6 3.2 Off-Site Downgradient Wells ................................................................................................... 6 4.0 Receptor Evaluation ........................................................................................................................... 7 4.1 Soil .......................................................................................................................................... 7 4.2 Groundwater ............................................................................................................................ 7 4.3 Direct Contact and Ingestion of Contaminated Groundwater .................................................. 7 4.4 Vapor ....................................................................................................................................... 8 4.5 Surface Water ......................................................................................................................... 8 4.6 Residential Receptors ............................................................................................................. 8 4.7 Underground Utilities ............................................................................................................... 8 4.8 Water Supply Wells ................................................................................................................. 9 5.0 Evaluation of Monitored Natural Attenuation .................................................................................... 10 5.1 Demonstrated Reduction in dissolved contaminant mass. .................................................... 11 5.2 Demonstrated reduction of contaminant concentration ......................................................... 12 5.3 Empirical First-Order Decay constants. ................................................................................. 13 6.0 Sampling and Monitoring Plan ......................................................................................................... 14 6.1 Laboratory Analysis ............................................................................................................... 14 6.2 Groundwater Monitoring ........................................................................................................ 14 6.3 Reporting ............................................................................................................................... 14 7.0 Conclusions and Recommendations ................................................................................................ 15 iii 8.0 References ...................................................................................................................................... 18 Tables Figures Appendices iv List of Tables ___________________________________________________ Table 1 Groundwater Elevations Table 2 Historical Soil Analytical Results (2015) Table 3 Confirmation Soil Analytical Results (2019) Table 4 Confirmation Soil Analytical Results (2020) Table 5 Groundwater Analytical Results Table 6 Dissolved TPH Mass Calculations Table 7 Dissolved TPH Mass Calculation summary Table 8 TPH Time trend regression summary List of Figures __________________________________________________ Figure 1 Site Location Map Figure 2 Site Plan Figure 3 Groundwater Elevation Contour Map (September 2021) Figure 4 Groundwater Elevation Contour Map (March 2023) Figure 5 Groundwater Elevation Time Trend Figure 6 TPH-DRO Concentrations in Soil Figure 7 TPH-DRO Isoconcentrations in Groundwater (August 2019) Figure 8 TPH-DRO Isoconcentrations in Groundwater (November 2019) Figure 9 TPH-DRO Isoconcentrations in Groundwater (February 2020) Figure 10 TPH-DRO Isoconcentrations in Groundwater (June 2020) Figure 11 TPH-DRO Isoconcentrations in Groundwater (September 2020) Figure 12 TPH-DRO Isoconcentrations in Groundwater (November 2020) Figure 13 TPH-DRO Isoconcentrations in Groundwater (March 2021) Figure 14 TPH-DRO Isoconcentrations in Groundwater (June 2021) Figure 15 TPH-DRO Isoconcentrations in Groundwater (September 2021) Figure 16 TPH-DRO Isoconcentrations in Groundwater (March 2022) Figure 17 TPH-DRO Isoconcentrations in Groundwater (March 2023) Figure 18 Time Trend of Total Dissolved TPH in Groundwater Figure 19 TPH and Groundwater Elevation Time Trend Well NES-1363 Figure 20 TPH and Groundwater Elevation Time Trend Well NES-1364 Figure 21 TPH and Groundwater Elevation Time Trend Well NES-1366 Figure 22 TPH and Groundwater Elevation Time Trend Well CTC-B14W Figure 23 TPH and Groundwater Elevation Time Trend Well CTC-B21W Figure 24 TPH and Groundwater Elevation Time Trend Well CTC-B25WR Figure 25 Exponential Regression of TPH Concentration Well NES-1363 v Figure 26 Exponential Regression of TPH Concentration Well NES-1364 Figure 27 Exponential Regression of TPH Concentration Well NES-1366 Figure 28 Exponential Regression of TPH Concentration Well CTC-B14W Figure 29 Exponential Regression of TPH Concentration Well CTC-B21W Figure 30 Exponential Regression of TPH Concentration Well CTC-B25WR List of Appendices _______________________________________________ Appendix A Mann-Kendall Statistical Analyses Appendix B Quarterly Summary Report and Request for No Further Action (May 2021) Appendix C Digitized Coordinates of the Contours vi List of Acronyms & Abbreviations __________________________________ APTIM Aptim Environmental & Infrastructure, LLC AST aboveground storage tank bgs below ground surface BTEX benzene, toluene, ethylbenzene, and xylenes COC chemical of concern DERR Department of Environmental Response and Remediation KUC Kennecott Utah Copper Linde Linde Inc. mg/kg milligrams per kilogram mg/L milligram(s) per liter MNA monitored natural attenuation TPH-DRO total petroleum hydrocarbons-diesel range organics TPH-GRO total petroleum hydrocarbons-gasoline range organics UDEQ Utah Department of Environmental Quality USEPA U.S. Environmental Protection Agency UST underground storage tank 1 1.0 Narrative Aptim Environmental & Infrastructure, LLC (APTIM) was retained by Linde Inc. (Linde) to prepare a Corrective Action Plan (CAP) for Monitored Natural Attenuation (MNA) for the former Union Carbide facility located at 12385 West U.S. Highway Alternate 40 in Magna, Utah (the site, Figure 1). 1.1 Site Description The site is positioned on an approximately two-acre piece of property located on State Highway 201 (West U.S. Highway Alternate 40), in an unincorporated area roughly four miles to the west of Magna Metro Township, at the base of the north end of the Oquirrh Mountains. Linde operates a compressed gas generation facility on land leased from Kennecott Utah Copper (KUC). Site improvements include a roughly 10,000-square-foot Operations Building and a roughly 1,500- square-foot trailer located in the northeastern section of the site. A 20,000-gallon diesel aboveground storage tank (AST) and dispenser area are located in the southwestern section of the site. A 1,000-gallon used oil AST and a 480-gallon new oil AST are also present on the site. The site is located within an industrial zone owned by KUC and used to support operations associated with mining operations. The site is adjoined to the east by the Acid Tank Loading Station; to the south by a service road, railyard, and Acid Tank Storage Farm; to the west by a pressure vessel tank farm; and to the north by State Highway 201 and undeveloped land and railways associated with KUC operations. A site plan is presented as Figure 2. 1.2 Site Background A 26,000-gallon diesel underground storage tank (UST), a 12,000-gallon diesel UST, an 8,000- gallon diesel UST, a 2,000-gallon lube oil UST, and a 500-gallon waste oil UST were historically in use on the site. The 500-gallon UST was located adjacent to the west side of the Operations Building. The remaining USTs were located in a line along the western edge of the site and were connected via underground product lines to a dispenser island located to the north of the line of USTs. Additional product lines ran underground from the Operations Building to the dispenser island. All of the site USTs were properly abandoned in place in June 1991. Historical investigations have identified petroleum hydrocarbons in the soil and groundwater under the west-central portion of the Linde facility. The encountered hydrocarbons appear to be characteristic of No. 2 diesel fuel. The most likely source for the on-site diesel contamination is a product line associated with a 26,000-gallon diesel UST that was abandoned in place in June 1991. The product line was located near the middle of the west side of the facility. The highest 2 concentrations of total petroleum hydrocarbons-diesel range organics (TPH-DRO) in soil and groundwater also are found in the middle of the west side of the facility. In 1994, Linde, working in conjunction with the adjacent KUC facility, began remediation of Linde’s diesel fuel release and KUC’s sulfuric acid release. Approximately 646 cubic yards of petroleum-contaminated soils were removed from the area of the former diesel UST during the construction of KUC’s groundwater recovery trench. In 1995, a closure report with a No Further Action request was submitted to the Utah Department of Environmental Quality’s (UDEQ) Department of Environmental Response and Remediation (DERR); a response was not received. Between 1995 and 2011, no documented response actions occurred. In March 2011, the corrective action process was re-initiated at the site in response to petroleum impacts discovered during maintenance of KUC’s groundwater recovery trench. Linde subsequently notified the UDEQ DERR of the discovery. Groundwater sampling was conducted in July and September 2015 and soil sampling was conducted in September 2015. A soil investigation conducted in 2015 indicated concentrations of TPH-DRO in one soil sample. Three soil borings were advanced using direct push techniques. Soil borings were advanced to a depth of 15 to 20 feet below ground surface (bgs). Soil samples were submitted to Pace Analytical Services, LLC for analysis of TPH-DRO; TPH-gasoline range organics (TPH-GRO); benzene, toluene, ethylbenzene, and total xylenes (BTEX); and naphthalene. Two soil borings were advanced using direct push techniques by Direct Push Services, LLC on August 20, 2019. Soil Boring CTC-B17W-RS was advanced to a depth of 18 feet bgs, while Soil Boring B-MW24-RS was advanced to a depth of 15 feet bgs. Soil samples were submitted to Pace Analytical Services, LLC for analysis of TPH-DRO. On April 11, 2018, the UDEQ DERR issued a letter that required additional site characterization be conducted to evaluate appropriate cleanup actions. In response to the UDEQ DERR letter, a letter was submitted to the UDEQ DERR by APTIM on behalf Linde in July 2018 agreeing to complete additional site characterization. Quarterly groundwater sampling was initiated in the first quarter of 2019 through the third quarter of 2021 to obtain an accurate representation of groundwater quality. Beginning in 2022, the groundwater sampling schedule was reduced to an annual basis while Linde evaluated potential options to close the site. During the fourth quarter of 2020, additional site characterization activities were conducted to define the horizontal and vertical extent of soil contamination. Eight soil borings (BH 1 through BH 8) were advanced using direct push techniques. Soil borings were advanced to a depth of 17 feet bgs, except for Soil Boring BH 1, which was advanced to a depth of 8 feet bgs. Soil 3 samples were submitted to Pace Analytical Services, LLC for analysis of TPH-DRO, BTEX, and naphthalene. 1.3 Site Geology and Hydrogeology The site is located at an elevation of approximately 4,245 feet above mean sea level and is nearly level with a slight slope to the northeast. The site is located in the plain between the Great Salt Lake and the northern end of the Oquirrh Mountain Range. The lake is located approximately one mile to the northwest of the site, while the northernmost slopes of the mountain range are located roughly 800 feet to the south of the site. Soils on the site consist primarily of sand with variable amounts of clay, silt, and gravel. Layers of silt and of clay with sand and gravel are also present in parts of the site. The depth to bedrock is estimated to be greater than 20 feet bgs. According to the Geologic Map of the Central Wasatch Front, Utah, prepared by F.D. Davis in 1983 for the Utah Geological and Mineral Survey, the site is underlain by the Provo Formation and Younger Lake Bottom Sediments, which consist of clays, silts, sands, and locally, offshore sand bars. Topography at the site is generally level, and slopes in the surrounding area generally trend to the north. Groundwater depths at the site range from 12 to 17 feet bgs. Groundwater flow direction at the site is well established and consistently toward the northeast. As illustrated on Figure 3 and Figure 4, the average horizontal groundwater gradient in the shallow groundwater aquifer is approximately 0.02 foot per foot. A summary of shallow groundwater table elevation measurements is presented in Table 1, and a time trend of groundwater elevations is presented on Figure 5 4 2.0 Nature and Extent of Impacts 2.1 Historic Sources of Impacts The location and nature of subsurface impacts is consistent with a historical release of No. 2 diesel fuel from the piping associated with the 26,000-gallon diesel UST. Both UST systems were cleaned and abandoned in place in June 1991. Approximately 646 cubic yards of diesel-impacted soil was removed from the site in 1994 during the construction of KUC’s groundwater recovery trench. 2.2 Soil Impacts Soil impacts are limited and confined to the vicinity of the source area near the former 26,000- gallon diesel UST. A soil investigation conducted in 2015 indicated concentrations of TPH-DRO in one soil sample (CTC-B17W-R, 18 to 20 feet bgs) that exceeded the Tier 1 screening criteria value of 5,000 milligrams per kilogram (mg/kg). Historically, no other constituents (BTEX, TPH-GRO, methyl tert-butyl ether, and naphthalene) exceeded the Tier 1 screening criteria values. In August 2019, two soil borings (CTC-B17W-RS and B-MW24-RS) were advanced using direct push techniques by Direct Push Services, LLC. Three soil samples were collected from each of the two soil borings to characterize all depths of soil that could be potentially impacted with TPH-DRO. Soil samples collected from Soil Boring CTC-B17W-RS were collected from the following sample intervals: 3 to 5 feet bgs, 7 to 9 feet bgs, and 11 to 13 feet bgs. Soil samples collected from Soil Boring B-MW24-RS were collected from the following sample intervals: 3 to 5 feet bgs, 7 to 9 feet bgs, and 10 to 12 feet bgs. The sample collection was determined by sampling the soil intervals directly above the water table and from the intervals displaying the highest photoionization detector readings. The confirmation soil analytical results from the two soil borings (i.e., CTC-B17W-RS and B-MW24-RS) indicated all TPH-DRO concentrations were below the Tier 1 screening criteria. A soil sampling event, conducted on November 11 and 12, 2020, concentrations of TPH-DRO exceeding the Tier 1 Screening Standard of 5,000 mg/kg were limited to one soil sample (BH 5, 13 to 15 feet bgs), where TPH-DRO concentrations were reported at 5,230 mg/kg. The soil boring was located approximately 25 feet to the east of the closed 26,000-gallon diesel UST. Additional soil sampling conducted during this sampling event indicates that all other concentrations of BTEX, naphthalene, and TPH-DRO had not been detected at levels exceeding the Tier 1 screening criteria values. 5 Because historical fluctuations in depths to groundwater have ranged from 12 to 18.5 feet bgs across the site, the soil samples collected during the September 2015 event from CTC-B17W-R (18 to 20 feet bgs) and in November 2020 from BH 5 (13 to 15 feet bgs) were collected from below the water table within the saturated zone and are not a true indication of soil conditions, but rather, groundwater. Historical soil sampling results are summarized in Tables 2 through 4 and presented on Figure 6. The results of soil sampling were too scattered for an isopleth contour to be meaningful 2.3 Light Non-Aqueous Phase Liquid Groundwater sampling conducted at the site does not indicate that light non-aqueous phase liquid is present. 2.4 Dissolved Phase Hydrocarbon Impacts During the recent groundwater sampling event (March 2023), the applicable remedial standard for TPH-DRO (Tier 1 Screening Criteria of 10 milligrams per liter [mg/L]) was slightly exceeded in one on-site monitoring well (CTC-B25WR at 14.5 mg/L). The concentrations of the remaining chemicals of concern (COCs) (i.e., BTEX and naphthalene) were less than their respective remedial standards. Groundwater analytical results are presented in Table 5. TPH-DRO concentrations are further discussed in Section 5.1. When the TPH-DRO concentrations are plotted against the groundwater elevations for Monitoring Wells CTC-B14W and CTC-B25WR, the graphs illustrate that the highest TPH-DRO concentra- tions have occurred when the low seasonal groundwater levels were recorded. Thus, the observed TPH-DRO concentrations at CTC-B14W and CTC-B25WR display seasonality attributed to fluctuations in the groundwater table are described in Section 5.2. To account for the seasonal variability, Mann-Kendall statistical analyses were conducted for the highest seasonal TPH-DRO concentrations (e.g., corresponding with low seasonal groundwater levels) at Monitoring Wells CTC-B14W and CTC-B25WR from 2019 through 2023. The statistical trend analyses of TPH-DRO concentrations in groundwater samples from CTC-B14W indicate a decreasing trend at a 90 percent confidence level. The analyses conducted on CTC- B25WR indicated stable TPH-DRO concentrations at an 80 percent confidence level. The Mann- Kendall statistical tests are presented in Appendix A. 6 3.0 Groundwater Plume Stability In February 2020, APTIM developed a groundwater flow and transport model to simulate the movement of groundwater impacted by diesel fuel in the shallow groundwater-bearing zone and the fate and transport of TPH-DRO constituents in the groundwater. The model was subsequently updated to include the results of the November 2020 confirmation soil sampling event and the operation of the groundwater interceptor trench located to the south of the Operations Building. The fate and transport analysis was presented in the Summary Report dated May 13, 2021 and is included as Appendix B. The fate and transport simulations for the cases evaluated show that groundwater with TPH-DRO concentrations greater than 10 mg/L would not move more than 10 to 20 feet downgradient of Monitoring Well NES-1363 and would not move downgradient of the site. Based on the modeled and monitored behavior of the dissolved TPH-DRO plume, the impacted groundwater is expected to remain in the vicinity of the former UST area. The model indicates that groundwater containing 0.1 mg/L TPH-DRO could be present under the Operations Building after 25 years. Since the preparation of the model., four additional rounds of groundwater sampling have been completed. A Mann-Kendall trend analysis was prepared for the groundwater sample results, which indicates that contamination concentrations at Monitoring Wells CTC-B14W and CTC- B25WR are stable and/or decreasing. Total Dissolved contaminant mass calculations indicate a shrinking plume. Details of these calculations are presented in Section 5.1. Time trend evaluations indicate that concentrations at Monitoring Wells CTC-B14W and CTC-B25WR are stable and/or decreasing. Details of these calculations are presented in Section 5.3 3.1 On-Site Downgradient Wells Groundwater Monitoring Wells NES-1363 and NES-1364 are located downgradient from the source area. During the most recent groundwater sampling event, which was completed on March 28, 2023, TPH-DRO was detected in each of these wells at concentrations (1.0 mg/L and 0.85 g/L, respectively) well below the Tier 1 criteria value for TPH-DRO of 10 mg/L. 3.2 Off-Site Downgradient Wells No groundwater monitoring wells associated with the site are present off site. 7 4.0 Receptor Evaluation The preliminary exposure assessment identifies potential receptors for exposure pathways for environmental media of potential concern from contaminant fate and transport mechanisms. Potential receptors at risk from exposure associated with the presence of COCs at the site are human and ecological receptors. The human receptor was segregated into subcategories to better identify the potential receptors at risk of exposure from the presence of COCs in environmental media of potential concern. The objective of the preliminary exposure assessment is to assess the completeness of exposure pathways from environmental media of potential concern and associated contaminant fate and transport mechanisms for the potential receptors for the site. The results from the preliminary exposure assessment will assist with the evaluation of potential feasible cleanup alternatives that are protective of the potential receptors identified as complete. The exposure pathways and potential receptors are discussed below. 4.1 Soil The concentrations of the COCs detected in soil samples collected at the site meet the applicable Tier 1 criteria values and present no potential risk to human receptors; therefore, the soil pathway for direct contact with soil and/or inhalation of airborne soil particles is considered complete. 4.2 Groundwater Impacted groundwater presents a limited potential risk to workers during construction. Ground- water beneath the site is not a potential source for drinking water, and the groundwater does not discharge to any nearby surface water body. The potential exposure pathway for groundwater is discussed in the following paragraph. 4.3 Direct Contact and Ingestion of Contaminated Groundwater This exposure pathway may be complete for environmental field personnel or construction and utility workers during any future redevelopment of the site. Future use of the site is expected to be industrial in nature and is, therefore, unlikely to lead to residential exposure of impacted groundwater. A soil and groundwater management plan will be prepared to provide direction for managing residual impacts that may be disturbed during work at the site. Groundwater at the site is not a current or future source for drinking water. 8 4.4 Vapor The nearest building to the area of impacts is the Operations Building, which is located down- gradient from the release. The area of soil impacts is located approximately 65 feet to the southwest of the building and is not considered a vapor intrusion risk. Based on the groundwater model prepared in November 2020, groundwater containing 0.1 mg/L TPH-DRO would be present under the Operations Building after 25 years. According to the Technical Guide for Addressing Petroleum Vapor Intrusion at Leaking Underground Storage Tank Sites, released by the U.S. Environmental Protection Agency (USEPA) in June 2015, the recommended vertical separation distance between groundwater contaminated with a TPH concentration of less than 30 mg/L and a building basement floor or foundation is 6 feet. Given that the Operations Building is of slab-on-grade construction and that the measured depth to groundwater on the site has ranged between 12 and 17 feet bgs, the site meets the recommended separation distance. Vapor intrusion is not considered a potential exposure pathway on the site. 4.5 Surface Water Monitoring data indicate the COCs in site groundwater will not migrate to off-site properties. The nearest surface water body to the site is the southern tip of the Great Salt Lake, located northwest of the site at a distance greater than 1 mile. Based upon long-term monitoring and fate and transport results, the Great Salt Lake is not a potential receptor for the site; therefore, the surface water diffusion pathway is complete. 4.6 Residential Receptors The site is located in an industrial zone. The nearest residential area is more than a mile from the site. 4.7 Underground Utilities Underground utilities present on the site include water, stormwater, natural gas, and electric lines. A groundwater interceptor trench installed in response to a sulfuric acid release from KUC operations is also present on the site. The approximate locations of site utilities are depicted in Figure 2. The area of groundwater impacts is in contact with the groundwater interceptor trench. The concentrations of the COCs (BTEX and naphthalene) are not detected at the laboratory specified detection limit from samples collected from the interceptor trench, and TPH-DRO results were less than their respective Tier 1 criteria values. The interceptor trench is not considered a potential exposure pathway on the site; the water is pumped to a KUC treatment facility for remediation. 9 The area of groundwater impacts overlaps with the water line. The water line is approximately 4 feet bgs and separated from groundwater by approximately 8 to 10 feet of clean fill. The water line is not considered a potential exposure pathway on the site. The remaining utilities are located outside of the area of Tier 1 groundwater impacts. 4.8 Water Supply Wells The Utah Division of Water Rights online mapping utility was used to identify nearby water supply wells. No potable water supply wells were identified within a one-mile radius of the site. The nearest downgradient water supply well is located roughly 3,800 feet to the northeast of the site and is used as a water source for milling, refining, and smelting purposes. 10 5.0 Evaluation of Monitored Natural Attenuation Remediation by MNA depends upon natural processes such as biodegradation, dispersion, dilution, volatilization, hydrolysis, and sorption to naturally attenuate petroleum COCs to achieve remedial goals. However, biodegradation of petroleum hydrocarbons is the single most important process contributing to natural attenuation of petroleum constituents. Many studies have demonstrated that biodegradation by indigenous microbes can contribute significantly to the destruction of organic compounds. In general, remediation by natural attenuation may be used in the following instances (USEPA, 1999 and ASTM E1943-98(2015)): 1. As the sole remedial action at sites (following source control measures, if necessary) where immediate threats to human health, safety, and the environment do not exist or have been migrated, and other COCs are unlikely to impact a receptor. 2. As a subsequent phase of remediation after another remedial action has sufficiently reduced concentrations/mass in the source area so that plume impacts on receptors are unlikely; or 3. As a part of multi-component remediation plan. Application and implementation of remediation by natural attenuation requires demonstration of remedial progress and attainment of remedial goals by use of converging lines of evidence obtained through monitoring and evaluation of resulting data (USEPA, 1999 and ASTM E1943- 98(2015)). With natural attenuation, a concentration-based goal may be achieved within a certain time frame if a plume is already shrinking. In general, remediation by natural attenuation is likely to meet concentration-based remediation goals which require relatively low concentrations at or near the source of a petroleum release in short time frames. The statistical trend analyses of TPH-DRO concentrations in groundwater samples from CTC-B14W indicate a decreasing trend. The analyses conducted on CTC-B25WR indicate stable TPH-DRO concentrations. Natural attenuation at the site will be evaluated using the ASTM (E1943-98 [2015]), DERR (2015), and USEPA (1999) guidelines which are summarized below. The primary line of evidence for natural attenuation is to define the plume as stable, shrinking, or expanding. A plume is stable when concentrations at points within the plume are relatively uniform over time. A stable or shrinking plume is evidence of natural attenuation. The source of COCs may persist in soils at the water table but the natural attenuation rate approximately equals 11 the mass loading rate for COCs to groundwater. If a plume is expanding but at a rate lower than the groundwater velocity, the risk reduction and performance goals may still be met depending on the presence and location of receptors. A shrinking plume exists when the contamination front is receding back to the source and concentrations in individual wells and total contaminant mass are decreasing over time. In general, a stable or shrinking plume is clear evidence of natural attenuation occurring at a site. However, even in the case of an expanding plume, the influence of natural attenuation can be demonstrated in many cases. The fate and transport analysis was presented in the Summary Report dated May 13, 2021 and is included as Appendix B. The plume status at the site will be evaluated using a concentration versus time analysis in selected wells. APTIM has determined, through two or three lines of evidence, that the plume is shrinking. First, APTIM has calculated dissolved contaminant mass for eleven dates, and determined that the contaminant mass has been decreasing since 2019. Second, Time trend plots for TPH-DRO at the impacted wells show concentration has been decreasing since 2019. The tertiary line of evidence for natural attenuation is fate and transport modeling to calculate source lifetimes to evaluate the TPH-DRO plume with future data. 5.1 Demonstrated Reduction in dissolved contaminant mass. Dissolved contaminant mass was computed as follows. The average site-wide concentration was computed and multiplied by the volume of groundwater in the affected area. The volume of groundwater in the affected area is the product of the area, the aquifer thickness and the porosity. APTIM prepared dissolved isoconcentration maps for the following sampling events: August 20, 2019 (Figure 7); November 14 2019 (Figure 8); February 19 2020 (Figure 9); June 25, 2020 (Figure 10); September 17, 2020 (Figure 11), November 10, 2020 (Figure 12), March 31, 2021 (Figure 13); June 28, 2021 (Figure 14); September 14, 2021 (Figure 15); March 29, 2022 (Figure 16), and March 28, 2023 (Figure 17). The dissolved contaminant mass per square foot can be computed from the concentration by the formula M* = C *T *VF, where M*= contaminant mass per unit area (milligrams per square foot) C = concentration (milligrams per liter) T = aquifer thickness (feet) VF = volume conversion factor (liters per cubic foot) 12 The dissolved contaminant mass over the site can be computed by digitizing the iso-concentration contours, determining the area inside each one, and totaling the mass loading inside the contours. The area inside each iso-concentration contour was computed by digitizing the coordinates of the contour. And computing area by the formula. A = sum( xi*yi-1) -yi*xi-1) ÷2, where xi an yi are the coordinates at point I, and these cross products are summed over a closed curve. The contribution of dissolved mass between two concentrations (for example between 5 mg/l and 10 mg/l) is computed by the prismoidal formula Mm = T*VF*(Cm+1 - Cm) * (Am+1- +sqrt(Am+1* Am) + Am) ÷3 This process is repeated from the lowest contour to the highest, and total mass is M = sum( Mm) The digitized coordinates of the contours can be found in Appendix C, Tables C-1 to C-11. The computed areas between the contours and the detailed dissolved mass calculations are presented on Table 6. A summary of the dissolved mass calculations is tabulated on Table 7, and graphically depicted on Figure 18. An overall downward trend is clearly evident. 5.2 Demonstrated reduction of contaminant concentration Aptim prepared time trend plots, comparing the TPH Concentration and Groundwater elevation of figures 19 to 24. An inspection of these plot reveals the following trends: • NES 1363 - Concentration constant at 2 ppm, spiked to 4 ppm in March 2021, decreased to 1 ppm. • NES 1364 - Concentration increased to 4 ppm by March 2019, plateaued there until June 2021, then decreased. • NES 1366 - Concentration always low. • CTC-B14W - Steadily Descending since March 2021, from 168 ppm to less than one. • CTC-B21W - Increasing until June 2020, then descending. • CTC-B25W(R) - Increasing until November 2019, then decreasing. 13 Correlation between TPH concentrations and groundwater elevations are not clearly evident from these graphs. 5.3 Empirical First-Order Decay constants. APTIM also prepared exponential regression plots (Figures 25 to 30) where the TPH concentration is plotted on a logarithmic scale against time. On these plots the time axis is the days since July 23, 2015. This time zero point was selected so that the regression constants would not require multiplication and division of large numbers. Each plot contains a trendline for all data collected since March 2019, and five plots contain an additional trendline that starts at the approximate time when the concentrations peaked at that location. This information is summarized on Table 8. From these figures and Table 8 the following TPH concentration trends can be inferred: • NES 1363 - After November 2020, decay of 0.002 day-1, implying a half life of 11.4 months. • NES 1364 - After August 19, decay of 0.001 day-1, implying a half life of 23 months. • NES 1366 - No trends evident. • CTC-B14W - After July 2019, decay of 0.003 day-1, implying a half-life of 7.6 months. • CTC-B21W - After June 2020, decay of 0.002 day-1, implying a half life of 11.4 months. • CTC-B25WR - After November 2020, decay of 0.002 day-1, implying a half life of 11.4 months. Extrapolation of these trends suggests that concentration will decrease below 2 mg/l sitewide by the end of 2024 at all wells except CTC-B25R, which will decrease below 2 mg/l in 2028. 14 6.0 Sampling and Monitoring Plan Groundwater monitoring will constitute the primary basis for evaluating the progress of natural attenuation at the site. The monitoring program is discussed below, together with the implementa- tion schedule, sampling network, and the estimated project duration. 6.1 Laboratory Analysis Groundwater samples will be collected by a Utah Certified UST Groundwater and Soil Sampler, as required by Utah state law according to standard USEPA and UDEQ protocols. Chain-of- custody procedures will be observed. APTIM identified the COCs for the diesel release to be BTEX, naphthalene, and TPH-DRO per Analytical Methods for Environmental Sampling dated July 2013. They will be analyzed according to USEPA Methods 8260 and 8015, respectively. Groundwater samples will be submitted to Pace Analytical Services, LLC for analysis. APTIM also identified Tier 1 Screening Criteria (Tier 1) taken from UDEQ’s Guildelines for Utah's Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3, dated March 2015 for groundwater to be the appropriate remediation standards for the site. 6.2 Groundwater Monitoring APTIM proposes to sample six monitoring wells (NES-1363, NES-1364, NES-1366, CTC-B14W, CTC-B21W, and CTC-B25WR). A site plan is presented as Figure 2. Prior to the start of sampling activities, static groundwater levels will be measured from the monitoring well network. Groundwater samples will be collected from the six monitoring wells using disposable bailers and/or peristaltic pump in accordance with USEPA guidance and the Utah Administrative Code R311-211, Corrective Action Cleanup Standards Policy, in order to obtain an accurate representation of groundwater quality. In addition to groundwater sampling from the on-site monitoring wells, APTIM will collect water samples from the interceptor trench sump located within the KUC interceptor trench. 6.3 Reporting Upon completion of each groundwater monitoring and sampling event, a monitoring report will be generated and submitted to UDEQ DERR no later than 60 days following the receipt of analytical results. The reports will summarize the respective field events and include the following documents: groundwater sampling field notes, laboratory analytical reports, chains-of-custody, and associated tables and figures to summarize analytical and field data. 15 7.0 Conclusions and Recommendations Linde has demonstrated that the historical release from 1991 has no impact to human health or the environment, and it is determined that applicable minimum standards cannot reasonably be achieved for TPH-DRO. The laboratory test results for TPH are too non-specific to be of real value in the assessment of potential health risks at sites. Specific compounds for diesel constituents of concern (BTEX and naphthalene) were analyzed and provide unequivocal analytical results for comparison to cleanup standards. Analytical results for BTEX and naphthalene in soil and groundwater were below Tier 1 criteria values. Linde removed 646 cubic yards of petroleum-contaminated soils in 1994. The extent of the contamination is expected to remain in the vicinity of the former UST area, and its relationship to present and potential surface and groundwater locations and their uses is unlikely. The primary line of evidence for natural attenuation is to define the plume as stable, shrinking, or expanding. A plume is stable when concentrations at points within the plume are relatively uniform over time. A stable or shrinking plume is evidence of natural attenuation. The source of constituents of concern may persist in soils at the water table but the natural attenuation rate approximately equals the mass loading rate for constituents of concern to groundwater. If a plume is expanding but a rate lower than the groundwater velocity, the risk reduction and performance goals may still be met depending on the presence and location of receptors. A shrinking plume exists when the contamination front is receding back to the source and concentrations in individual wells and total contaminant mass are decreasing over time. In general, a stable or shrinking plume is clear evidence of natural attenuation occurring at a site. However, even in the case of an expanding plume, the influence of natural attenuation can be demonstrated in many cases. The plume status at the site was evaluated using concentration vs. time analysis in selected wells. With the assumption of first-order decay, the log of concentrations in individual wells were plotted against the distance, the slope of the straight line results is the attenuation rate. A first-order decay assumption is typical and holds true for most site conditions. Therefore, the corrective action approach selected for implementation is Monitored Natural Attenuation. The approach was selected based on the technical feasibility and ease of implementation, cost/benefit analysis, the level of source reduction achieved through UST closure, excavation, absence of off-site migration and little or no potential to impact human health and environment. Because site data indicate that natural attenuation is occurring steadily, there would 16 be little benefit in further active remedial measures, certainly not enough to offset the disturbance to the environment that accompanies such active remedial measures. APTIM proposes to monitor six monitoring wells (NES-1363, NES-1364, NES-1366, CTC- B14W, CTC-B21W, and CTC-B25WR); based on the available groundwater data, concentrations of TPH-DRO in groundwater exceed their respective Tier 1 Screening Criteria in one monitoring well (CTC-B25WR). Groundwater impacts are limited to the area east of the former UST field. The limited extent of impacts and the concentration levels do not justify any remedial action beyond groundwater monitoring at this time. A Mann-Kendall trend analysis conducted on the groundwater sampling results indicates that contamination concentrations in the on-site wells are stable or decreasing. Total contaminant mass calculations reveal that the plume has been shrinking since 2020, and time trend analyses at affected wells CTC-B14W, CTC-B-21W, and CTC-B25WR and using logarithmic regression indicated decay rates with a half life of two years or less. APTIM proposes groundwater monitoring and sampling on a frequency of one round (6 Wells) every 15 months, so that each sampling event will take place during a different quarter of the year. Groundwater monitoring and sampling will be conducted to verify that the plume is not expanding, has not migrated off-site, and that all COC concentrations indicate stable or decreasing trends. The frequency of groundwater monitoring and sampling may be reduced if attainment of the Tier 1 criteria values for BTEX, naphthalene, and TPH-DRO are met. Groundwater monitoring will continue at the site (on the above frequency) to confirm that the concentration doesn’t rebound and remains below Tier 1 criteria values (for 2 subsequent rounds) before requesting DERR for site closure. Groundwater monitoring reports will be prepared and submitted to UDEQ DERR within 60 days after receiving analysis results from the analytical laboratory. The reports will contain the following information: • A status report of the effectiveness of the remedial activities • Groundwater monitoring data in tabular form • Groundwater analytical results in tabular form • A site plan, groundwater contour map, and groundwater isoconcentration maps (if applicable) • Sampling methodology 17 • Laboratory analytical results as an appendix • Recommendations to continue, modify, or discontinue remedial activities based on site groundwater hydrocarbon concentrations. Upon the conclusion of groundwater attainment monitoring and subsequent compliance with the Tier 1 criteria values, or fate and transport analysis demonstrating that the groundwater impact is limited to the vicinity of the former UST area and will not extend beyond the point of compliance and/or beneath the Operations Building, a closure request will be submitted to UDEQ DERR requesting a no further action designation for the site. If the attainment monitoring goals are not achieved or if substantial rebound in concentrations are observed during MNA sampling, DERR will be consulted on the future course of action. 18 8.0 References Aptim Environmental & Infrastructure, LLC, February 2020. Summary Report and Request for “Less than Clean” No Further Action Request: Linde Inc. 12385 West U.S. Highway Alternate 40 Magna, Utah (Facility ID 4002146; Leak ID). Aptim Environmental & Infrastructure, LLC, July 2020. Work Plan – Additional Site Characterization: Linde Inc. 12385 West U.S. Highway Alternate 40 Magna, Utah (Facility ID 4002146; Leak ID). Aptim Environmental & Infrastructure, LLC, May 2021. Quarterly Summary Report and Request for No Further Action: Linde Inc12385 West U.S. Highway Alternate 40 Magna, Utah (Facility ID 4002146; Leak ID). Aptim Environmental & Infrastructure, LLC, May 2023. Quarterly Summary Report: Linde, Inc. 12385 West U.S. Highway Alternate 40 Magna, Utah (Facility ID 4002146; Leak ID). American Society for Testing Materials (2015) Standard Guide for Remediation of Ground Water by Natural Attenuation at Petroleum Release Sites. Davis, F. D. (Fitzhugh D.); Gurgel, Klaus D.; Jones, B. R. (Cartographer); Stewart, Sandra R.; Powers, D. E.; Geologic Map of the Central Wasatch Front, Utah; Utah Geological and Mineral Survey 1983. United States Environmental Protection Agency (1999). Use of Monitored Natural Attenuation at Superfund, RCRA Corrective Action, and Underground Storage Tank Sites. Utah Division of Environmental Response and Remediation (2000 (Updated 2015). Guidelines for Utah’s Corrective Action Process for Leaking Underground Storage Tanks. Utah Division of Environmental Response and Remediation. Appendix A - Supplemental Information for a Corrective Action Plan for Monitored Natural Attenuation. Tables Table 1 Groundwater Elevation Data Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Well Identification Reference Elevation (ft msl)1 Groundwater Measurement Date Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) 7/23/2015 16.10 4230.40 16.21 4228.77 17.89 4230.53 17.81 4231.75 15.90 4230.98 18.21 4231.81 9/17/2015 15.92 4230.58 15.98 4229.00 18.25 4230.17 17.94 4231.62 15.84 4231.04 18.62 4231.40 3/20/2019 14.95 4231.55 13.75 4231.23 15.60 4232.82 16.39 4233.17 15.01 4231.87 15.95 4234.07 5/21/2019 NA ---NA ---NA ---NA ---NA ---NA --- 8/20/2019 13.43 4233.07 11.90 4233.08 14.75 4233.67 14.52 4235.04 13.42 4233.46 15.31 4234.71 11/14/2019 14.32 4232.18 12.51 4232.47 14.55 4233.87 14.41 4235.15 14.32 4232.56 15.96 4234.06 2/19/2020 13.67 4232.83 12.20 4232.78 14.85 4233.57 14.72 4234.84 13.84 4233.04 15.47 4234.55 6/25/2020 13.73 4232.77 13.39 4231.59 15.13 4233.29 14.81 4234.75 13.72 4233.16 15.69 4234.33 9/17/2020 14.71 4231.79 13.68 4231.30 16.29 4232.13 15.87 4233.69 14.65 4232.23 16.70 4233.32 11/10/2020 13.67 4232.83 13.23 4231.75 16.35 4232.07 15.85 4233.71 14.65 4232.23 16.70 4233.32 3/31/2021 14.50 4232.00 12.99 4231.99 16.15 4232.27 15.58 4233.98 14.46 4232.42 16.58 4233.44 6/28/2021 14.95 4231.55 13.43 4231.55 16.67 4231.75 15.97 4233.59 14.99 4231.89 17.10 4232.92 9/14/2021 15.05 4231.45 13.55 4231.43 16.62 4231.80 16.09 4233.47 15.04 4231.84 17.11 4232.91 3/29/2022 14.08 4232.42 12.50 4232.48 15.71 4232.71 15.08 4234.48 14.10 4232.78 16.30 4233.72 3/28/2023 13.97 4232.53 12.40 4232.58 15.35 4233.07 14.97 4234.59 14.01 4232.87 16.01 4234.01 Notes: - 1 ft msl - Feet above mean sea level. 4250.02 NES-1363 NES-1364 NES-1366 CTC-B14W CTC-B21W CTC-B25W/CTC-B25WR 4246.50 4244.98 4248.42 4249.56 4246.88 Page 1 of 1 Table 2 Historical Soil Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah CTC-B15W-R 15FT CTC-B17W-R 15-18FT CTC-B17W-R 18-20FT B-MW24-R 13-15FT Tier 11 09/17/15 09/17/15 09/17/15 09/17/15 Contaminant (mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg) Benzene 0.9 ND 0.005 ND 0.005 ND 0.05 ND 0.05 Toluene 25 ND 0.025 ND 0.025 ND 0.25 ND 0.25 Ethylbenzene 23 ND 0.005 ND 0.005 0.344 ND 0.05 Total Xylenes 142 ND 0.015 ND 0.015 ND 0.15 ND 0.15 TPH-DRO 5,000 ND 4.0 1,130 8,500 2,980 TPH-GRO 1,500 ND 0.5 7.44 205 46.1 MTBE 0.3 ND 0.005 ND 0.005 ND 0.05 ND 0.05 Naphthalene 51 ND 0.025 ND 0.025 1.91 ND 0.25 Notes: - TPH-DRO - Total Petroleum Hydrocarbons-Diesel Range Organics - TPH-DRO - Total Petroleum Hydrocarbons-Gasoline Range Organics - MTBE - Methyl tert-butyl ether Storage Tank Sites, Table 1-3 dated March 2015 - mg/kg = Milligram per kilogram. - ND 0.005 = Concentration not detected at the laboratory specified detection limit. - Sample results that exceed the Tier 1 Screening Criteria appear in black shaded cells with bold white text. - 1 Tier 1 Screening Criteria (Tier 1) taken from Utah Department of Environmental Quality Guildelines for Utah's Corrective Action Process for Leaking Underground Page 1 of 1 Table 3 Confirmation Soil Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 11 Results Sample Identification Sample Date Contaminant (mg/kg)(mg/kg) B-MW-24-RS (3-5)08/20/19 TPH-DRO 5,000 8.5 B-MW-24-RS (7-9)08/20/19 TPH-DRO 5,000 ND 7.1 B-MW-24-RS (10-12)08/20/19 TPH-DRO 5,000 ND 6.9 CTC-B17W-RS (3-5)08/20/19 TPH-DRO 5,000 10.9 CTC-B17W-RS (7-9)08/20/19 TPH-DRO 5,000 ND 6.9 CTC-B17W-RS (11-13)08/20/19 TPH-DRO 5,000 10.5 Notes: - TPH-DRO - Total Petroleum Hydrocarbons-Diesel Range Organics Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3 dated March 2015. - mg/kg = Milligram per kilogram. - ND 0.005 = Concentration not detected at the laboratory specified detection limit. 1 Tier 1 Screening Criteria (Tier 1) taken from Utah Department of Environmental Quality Guidelines for Utah's Page 1 of 1 Table 4 Confirmation Soil Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 11 BH 1 BH 1 BH 2 BH 2 BH 2 BH 3 BH 3 BH 3 BH 4 BH 4 BH 4 Contaminant (mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg) Date -11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 PID Reading (ppm) -0.7 0.8 0.4 1.9 1.2 4.6 3.6 5.2 5.3 4.2 3.3 Depth of Sample (ft. bgs)-5-7 7-8 5-7 10-12 15-17 5-7 10-12 15-17 5-7 10-12 15-17 Benzene 0.9 ND 0.0005 ND 0.0012 ND 0.0012 ND 0.0022 ND 0.0022 ND 0.0017 ND 0.0022 ND 0.0012 ND 0.0023 ND 0.0020 ND 0.0019 Toluene 25 ND 0.0005 ND 0.0012 ND 0.0012 ND 0.0022 ND 0.0022 ND 0.0017 ND 0.0022 ND 0.0012 ND 0.0023 ND 0.0020 ND 0.0019 Ethylbenzene 23 ND 0.0005 ND 0.0012 ND 0.0012 ND 0.0022 ND 0.0022 ND 0.0017 ND 0.0022 ND 0.0012 ND 0.0023 ND 0.0020 ND 0.0019 Total Xylenes 142 ND 0.001 ND 0.0023 ND 0.0025 ND 0.0044 ND 0.0044 ND 0.0033 ND 0.0045 ND 0.0024 ND 0.0046 ND 0.0041 ND 0.0037 TPH-DRO 5,000 ND 14.3 ND 14.1 ND 14.2 14.4 22.3 21.4 17.5 ND 14.2 82.8 41.3 29.8 Naphthalene 51 ND 0.0005 ND 0.0012 ND 0.0012 ND 0.0022 ND 0.0022 ND 0.0017 ND 0.0022 ND 0.0012 ND 0.0023 ND 0.0020 ND 0.0019 Tier 11 BH 5 BH 5 BH 5 BH 6 BH 6 BH 6 BH 7 BH 7 BH 7 BH 8 BH 8 BH 8 Contaminant (mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg) Date -11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 PID Reading (ppm)-3.0 139.2 54.4 3.5 1.9 24.0 4.3 1.9 2.1 6.4 4.4 7.5 Depth of Sample (ft. bgs)-10-12 13-15 15-17 5-7 10-12 15-17 5-7 10-12 15-17 5-7 10-12 15-17 Benzene 0.9 ND 0.0024 ND 0.110 ND 0.0024 ND 0.0019 ND 0.0017 ND 0.0022 ND 0.0017 ND 0.0019 ND 0.0017 ND 0.0018 ND 0.0021 ND 0.0026 Toluene 25 ND 0.0024 ND 0.110 ND 0.0024 ND 0.0019 ND 0.0017 ND 0.0022 ND 0.0017 ND 0.0019 ND 0.0017 ND 0.0018 ND 0.0021 ND 0.0026 Ethylbenzene 23 ND 0.0024 ND 0.110 ND 0.0024 ND 0.0019 ND 0.0017 ND 0.0022 ND 0.0017 ND 0.0019 ND 0.0017 ND 0.0018 ND 0.0021 ND 0.0026 Total Xylenes 142 ND 0.0049 0.41 ND 0.0049 ND 0.0037 ND 0.0034 ND 0.0043 ND 0.0035 ND 0.0038 ND 0.0034 ND 0.0036 ND 0.0042 ND 0.0052 TPH-DRO 5,000 ND 14.0 5,230 77.8 ND 15.2 ND 14.0 ND 14.3 ND 15.2 ND 15.4 18.3 ND 14.3 ND 13.9 ND 14.0 Naphthalene 51 ND 0.0024 15.8 0.0055 ND 0.0019 ND 0.0017 ND 0.0022 ND 0.0017 ND 0.0019 ND 0.0017 ND 0.0018 ND 0.0021 0.0963 Notes: - TPH-DRO - Total Petroleum Hydrocarbons-Diesel Range Organics - 1 Tier 1 Screening Criteria (Tier 1) taken from Utah Department of Environmental Quality Guidelines for Utah's Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3 dated March 2015. - mg/kg = Milligram per kilogram. - ND 0.005 = Concentration not detected at the laboratory specified detection limit. - Sample results that exceed the Tier 1 Screening Criteria appear in black shaded cells with bold white text. Soil Analytical Results Soil Analytical Results Page 1 of 1 Table 5 Groundwater Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 11 07/23/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 06/28/21 09/14/21 03/29/22 03/28/23 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.0005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 6.89 1.7 1.3 1.9 1.4 1.9 1.6 1.9 4.7 3.0 2.4 1.3 1.0 1.0 Naphthalene 0.7 ND 0.005 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.004 Tier 11 07/23/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 06/28/21 09/14/21 03/29/22 03/28/23 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.0005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 1.04 1.7 1.5 3.8 3.9 4.6 2.0 2.6 6.4 2.6 3.9 2.3 1.1 0.85 Naphthalene 0.7 ND 0.005 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.004 See notes at end of table NES-1363 NES-1364 Page 1 of 4 Table 5 Groundwater Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 11 07/23/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 06/28/21 09/14/21 03/29/22 03/28/23 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.0005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 0.296 0.25 0.18 0.25 0.26 0.61 1.00 0.18 0.57 0.21 0.98 0.27 0.21 0.42 Naphthalene 0.7 ND 0.005 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.004 Tier 12 09/17/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 06/28/21 09/14/21 03/29/22 03/28/23 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 0.00147 0.0018 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 0.0011 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 0.0033 0.0074 0.0011 0.0011 0.0011 ND 0.001 ND 0.001 0.0013 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 44.8 168 33.2 73.2 50.3 33.8 23.5 20.8 38.7 1.1 39.0 5.8 15.0 0.51 Naphthalene 0.7 ND 0.005 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.004 See notes at end of table NES-1366 CTC-B14W Page 2 of 4 Table 5 Groundwater Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 12 07/23/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 06/28/21 09/14/21 03/29/22 03/28/23 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.0005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 NA 2.3 2.7 8.8 3.7 7.2 16.1 12.6 2.1 5.8 5.4 5.8 1.8 1.7 Naphthalene 0.7 0.00028 J ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.004 Tier 12 09/17/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 06/28/21 09/14/21 03/29/22 03/28/23 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.001 NA ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.005 NA ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 0.00216 NA ND 0.001 ND 0.001 0.0491 0.0561 0.0656 0.0469 0.0624 0.0671 0.071 0.0635 0.066 0.0634 Total Xylenes 10 ND 0.003 NA ND 0.003 ND 0.003 0.0094 0.011 0.0124 0.0082 0.0099 0.0098 0.0116 0.0108 0.009 0.0094 TPH-DRO 10 5.28 NA 0.73 1.1 23.3 7.2 3.4 3.6 39.6 25.9 22.9 15.5 18.3 14.5 Naphthalene 0.7 ND 0.005 NA ND 0.002 ND 0.002 0.0084 0.009 0.0089 0.0088 0.0098 0.0067 0.0134 0.0098 0.0107 0.0116 See notes at end of table CTC-B25W/CTC-B25WR CTC-B21W Page 3 of 4 Table 5 Groundwater Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 12 11/10/20 03/31/21 06/28/21 09/14/21 03/29/22 03/28/23 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 0.46 1.7 0.24 0.38 0.25 0.13 Naphthalene 0.7 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.004 Notes: - 1 Tier 1 Screening Criteria (Tier 1) taken from Utah Department of Environmental Quality Guildelines for Utah's Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3 dated March 2015. - mg/L = Milligram per liter. - NA = Not analyzed. - ND 0.00123 = Concentration not detected at the laboratory specified detection limit. - Sample results that exceed the Tier 1 Screening Criteria appear in black shaded cells with bold white text. TRENCH-1 Page 4 of 4 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 73.2 3627.4 0.00 --------- 40 1982.2 192.34 1645.2 64.11 105.48 20 991.1 671.18 991.1 407.61 403.97 10 495.5 1606.55 495.5 1105.38 547.77 5 247.8 4094.38 247.8 2755.22 682.67 2 99.1 8112.08 148.7 5989.87 890.48 1 49.6 14383.26 49.6 11099.03 550.01 0 0.0 24000.00 49.6 18987.59 940.92 Total 4121.29 grams Dissolved Mass 9.08 pounds Concentration Area Mass per Area Contoured Contaminant Mass Calculations - August 30, 2019 Page 1 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 50.3 2492.6 0.00 --------- 40 1982.2 411.00 510.4 137.00 69.93 20 991.1 2758.25 991.1 1411.32 1398.75 10 495.5 4265.34 495.5 3484.53 1726.74 5 247.8 7133.15 247.8 5638.14 1396.97 2 99.1 11274.83 148.7 9125.33 1356.60 1 49.6 16328.44 49.6 13723.88 680.08 0 0.0 24000.00 49.6 20041.49 993.15 Total 7622.22 grams Dissolved Mass 16.80 pounds Contoured Contaminant Mass Calculations - November 14, 2019 Concentration Mass per Area Area Page 2 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 33.8 1674.9 0.00 --------- 20 991.1 256.48 683.9 85.49 58.47 10 495.5 2210.26 495.5 1073.22 531.83 5 247.8 5383.67 247.8 3681.16 912.09 2 99.1 11165.13 148.7 8100.61 1204.26 1 49.6 15895.89 49.6 13461.06 667.06 0 0.0 24000.00 49.6 19809.32 981.64 Total 4355.35 grams Dissolved Mass 9.60 pounds Concentration Mass per Area Area Contoured Contaminant Mass Calculations - February 19, 2020 Page 3 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 50.3 2492.6 0.00 --------- 23.5 1164.5 0.00 0.00 0.00 20 991.1 449.89 173.4 149.96 26.01 10 495.5 2314.50 495.5 1261.60 625.18 5 247.8 5048.81 247.8 3593.91 890.47 2 99.1 9508.70 148.7 7162.09 1064.74 1 49.6 15332.61 49.6 12305.26 609.78 0 0.0 24000.00 49.6 19505.16 966.57 Total 4182.75 grams Dissolved Mass 9.22 pounds Contoured Contaminant Mass Calculations - June 25, 2020 Concentration Mass per Area Area Page 4 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 20.8 1030.7 0.00 --------- 20 991.1 1194.12 39.6 398.04 15.78 10 495.5 3871.07 495.5 2405.06 1191.82 5 247.8 8863.79 247.8 6197.51 1535.57 2 99.1 14137.40 148.7 11398.47 1694.54 0 0.0 24000.00 99.1 18852.48 1868.45 Total 6306.15 grams Dissolved Mass 13.90 pounds Contoured Contaminant Mass Calculations - September 17, 2020 Concentration Mass per Area Area Page 5 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 38.70 1917.8 0.00 --------- 20.00 991.1 556.73 926.7 185.58 171.97 10.00 495.5 1330.47 495.5 915.95 453.89 39.50 1957.4 0 --------- 20.00 991.1 1152.147 966.3 384.05 371.11 10.00 495.5 3211.687 495.5 2095.82 1038.57 2.10 104.1 0 --------- 5.00 247.8 529.1665 -143.7 176.39 -25.35 5.00 247.8 9519.062 --------- 5.00 247.8 529.17 --------- 5.00 247.8 8989.90 --------- 10.00 495.5 4542.15 --------- 5.00 247.8 8989.90 247.8 6640.72 1645.39 0.00 0.0 24000.00 247.8 15892.86 3937.81 Total 7593.39 grams Dissolved Mass 16.74 pounds Mass per Area Area Contoured Contaminant Mass Calculations - November 20, 2020 Concentration Page 6 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 5.80 287.4 0.00 --------- 5.00 247.8 240.90 39.6 80.30 3.18 25.40 1258.7 0 --------- 20.00 991.1 497.1532 267.6 165.72 44.35 10.00 495.5 2047.631 495.5 1184.58 587.01 5.00 247.8 4426.748 247.8 3161.69 783.38 1.10 54.5 0.00 -54.5 0.00 0.00 2.00 99.1 272.10 -44.6 90.70 -4.05 2.00 99.1 12035.84 --------- 2.00 99.1 -272.10 --------- 2.00 99.1 11763.74 --------- 5.00 247.8 4667.65 --------- 2.00 99.1 11763.74 148.7 7947.15 1181.45 0.00 0.0 24000.00 99.1 17522.14 1736.60 Total 4331.93 grams Dissolved Mass 9.55 pounds Concentration Mass per Area Area Contoured Contaminant Mass Calculations - March 13, 2021 Page 7 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 39.00 1932.6 0.00 0.00 0.00 20.00 991.1 1739.49 941.5 579.83 545.93 10.00 495.5 3628.86 495.5 2626.93 1301.76 5.00 247.8 5838.00 247.8 4689.87 1162.02 2.00 99.1 9911.81 148.7 7785.58 1157.43 1.00 49.6 16945.08 49.6 13272.23 657.70 0.00 0.0 24000.00 49.6 20370.48 1009.45 Total 5834.29 grams Dissolved Mass 12.86 pounds Concentration Mass per Area Area Contoured Contaminant Mass Calculations - June 18, 2021 Page 8 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 15.50 768.1 0.00 -768.1 0.00 0.00 10.00 495.5 957.03 272.5 319.01 86.95 5.00 247.8 4632.40 247.8 2564.99 635.53 2.00 99.1 7952.56 148.7 6218.17 924.41 1.00 49.6 12273.81 49.6 10035.35 497.30 0.00 0.0 24000.00 49.6 17812.30 882.68 Total 3026.87 grams Dissolved Mass 6.67 pounds Contoured Contaminant Mass Calculations - September 14, 2021 Concentration Mass per Area Area Page 9 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 18.53 918.2 0.00 --------- 15.00 743.3 1851.51 174.9 617.17 107.96 10.00 495.5 2116.93 247.8 1982.74 491.27 5.00 247.8 4616.71 247.8 3286.62 814.33 2.00 99.1 7020.87 148.7 5776.95 858.82 1.00 49.6 10307.08 49.6 8611.56 426.74 0.00 0.0 24000.00 49.6 16678.36 826.49 Total 3525.61 grams 7.77 pounds Contoured Contaminant Mass Calculations - March 29, 2022 Concentration Mass per Area Area Page 10 of 11 Table 6 Dissolve Contaminant Mass Calculation from Isopleth Contours Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Conversion Factor 1 mg/l 28.32 l/ft^3 Aquifer Thickness 7 feet Total Porosity 25% Mass-Concentration Factor 49.55 mg/square ft 0.0496 grams/sq ft Mass Prismoidal Contaminant per Area Average Mass Difference Area Increment mg/l mg/sq ft sq ft mg/ sq ft sq ft grams 14.50 718.5 0.00 --------- 10.00 495.5 420.74 223.0 140.25 31.27 5.00 247.8 1296.56 247.8 818.63 202.83 2.00 99.1 2648.13 148.7 1932.55 287.30 1.00 49.6 7473.99 --------- 1.00 49.6 7162.43 0.0 3270.19 0.00 0.51 25.3 0.00 --------- 1.00 49.6 311.56 -24.3 103.85 -2.52 1.00 49.6 7473.99 --------- 0.00 0.0 24000.00 49.6 14757.81 731.32 Total 1250.20 grams Dissolved Mass 2.76 pounds Concentration Mass per Area Area Contoured Contaminant Mass Calculations - March 28, 2023 Page 11 of 11 Table 7 Summary of average Concentrations and Contaminant Masses Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah grams pounds 8/20/2019 4,121 9.08 11/14/2019 7,622 16.80 2/19/2020 4,355 9.60 6/25/2020 4,183 9.22 9/17/2020 6,306 13.90 11/20/2020 7,593 16.74 3/13/2021 4,332 9.55 6/18/2021 5,834 12.86 9/14/2021 3,027 6.67 3/29/2022 3,526 7.77 3/28/2023 1,250 2.76 Trendline Slope Rate of TPH Attenuation (grams per day)-3.0083 Trendline Intercept Mass present 1/0/1900 (grams)137753 Projected date of zero contaminant mass 5/13/2025 Date Contaminant Mass Table 8 Summary of Regression of Concentration Trends Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Start End 2 ppm 1 ppm 2 ppm 1 ppm NES 1363 7/30/2019 3/28/2023 2.6914 -2.00E-04 113.9 0.0042 1484.57 4950.31 8/15/2019 2/9/2029 11/11/2020 3/28/2023 115.38 -0.002 11.4 0.8622 2027.54 2374.12 2/8/2021 1/21/2022 NES 1364 7/30/2019 3/28/2023 7.1425 -0.0006 38.0 0.04389 2121.53 3276.77 5/13/2021 7/11/2024 8/20/2019 3/28/2023 27.6861 -0.001 22.8 0.3036 2627.78 3320.93 10/1/2022 8/24/2024 NES 1366 7/30/2019 3/28/2023 0.2161 2.00E-04 -113.9 0.0122 11125.81 7660.07 1/6/2046 7/12/2036 8/20/2019 3/28/2023 0.4062 -4.00E-05 569.3 0.0024 -39851.42 -22522.74 6/13/1906 11/22/1953 CTC-B14W 7/30/2019 3/28/2023 5186.2 -0.003 7.6 0.6415 2620.20 2851.25 9/24/2022 5/13/2023 CTC-B21Q 7/30/2019 3/28/2023 11.147 -0.0005 45.5 0.0217 3436.05 4822.34 12/18/2024 10/4/2028 9/14/2020 3/28/2023 296.58 -0.002 11.4 0.6261 2499.58 2846.16 5/26/2022 5/8/2023 CTC-B25R 7/30/2019 3/28/2023 0.2242 0.0019 -12.0 0.0345 1151.77 786.96 9/16/2018 9/16/2017 11/10/2020 3/28/2023 210.76 -0.001 22.8 0.7225 4657.57 5350.72 4/22/2028 3/16/2030 Notes: * Factor is the inferred concentration at time 0 (7/23/15) 7/23/2015 is zero time point selected for time regressions Decay constant information dimmed if correlation is inadequate Time to Date ofTrend Eqution Factor* Well ID Decay Constant days-1 Decay Halflife months Corrrelation Coefficient Regression Period Figures FORMER DISPENSER AREA OPERATIONS BUILDING DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA CTC-B16W CTC-B10W CTC-B21W CTC-B14W NES1365 NES1376 TF-14 B-MW24-R B-MW24-RS CTC-B17W-R CTC-B25W GROUNDWATER INTERCEPTOR TRENCH FORMER SERVICE LINES TRE N C H EXTRACTION WELL VAULT NES1363 CTC-B15W-R NES1366 MW-26 NES1364 CTC-B17W-RS CTC-B25WR BH1 BH2 BH8 BH3BH4 BH5 BH6 BH7 STATE ROUTE 201 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER OP E R A T I O N S BU I L D I N G DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 0 3 8 7 9 - B 2 2 LINDE FACILITY MAGNA, UTAH SITE PLAN FIGURE 2 LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION APPROXIMATE ABANDONED MONITORING WELL LOCATION APPROXIMATE MONITORING WELL LOCATION (NOT USED FOR SITE CHARACTERIZATION) APPROXIMATE SOIL BORING LOCATION (2015) APPROXIMATE SOIL BORING LOCATION (2019) APPROXIMATE SOIL BORING LOCATION (2020) APPROXIMATE GAS LINE APPROXIMATE ELECTRIC LINE APPROXIMATE WATER LINE APPROXIMATE STORM WATER LINE NOTE: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' FORMER DISPENSER AREA OPERATIONS BUILDING DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA CTC-B21W CTC-B14W GROUNDWATER INTERCEPTOR TRENCH NES1364 (4233.47) 4232 4233 42 3 2 (4231.84) (4231.43) NES1363 (4231.45) 42 3 3 EXTRACTION WELL VAULT (4231.80) NES1366CTC-B25WR (4232.91) STATE ROUTE 201 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER OP E R A T I O N S BU I L D I N G DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 0 3 8 7 9 - B 2 8 LINDE FACILITY MAGNA, UTAH GROUNDWATER ELEVATION CONTOUR MAP SEPTEMBER 14, 2021 FIGURE 3 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION GROUNDWATER ELEVATION (FT MSL) GROUNDWATER CONTOUR (DASHED WHERE INFERRED) APPARENT GROUNDWATER FLOW DIRECTION NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. HYDRAULIC GRADIENT = 0.02 FT/FT AS DERIVED FROM THE FOLLOWING CALCULATION: CTC-B25WR (4232.91) - NES-1364 (4231.43) 62 FT (4231.45) 4232 FORMER DISPENSER AREA OPERATIONS BUILDING DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA CTC-B21W CTC-B14W GROUNDWATER INTERCEPTOR TRENCH NES1364 (4234.59) 4233 4234 42 3 3 (4232.87) (4232.58) NES1363 (4232.53) 42 3 4 (4233.07) NES1366CTC-B25WR (4234.01) EXTRACTION WELL VAULT STATE ROUTE 201 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER OP E R A T I O N S BU I L D I N G DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 3 0 1 5 5 - B 1 LINDE FACILITY MAGNA, UTAH GROUNDWATER ELEVATION CONTOUR MAP MARCH 28, 2023 FIGURE 4 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION GROUNDWATER ELEVATION (FT MSL) GROUNDWATER CONTOUR (DASHED WHERE INFERRED) APPARENT GROUNDWATER FLOW DIRECTION NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. HYDRAULIC GRADIENT = 0.02 FT/FT AS DERIVED FROM THE FOLLOWING CALCULATION: CTC-B25WR (4234.01) - NES-1364 (4232.58) 75 FT (4232.53) 4233 DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 GROUNDWATER ELEVATION TIME TRENDS FIGURE 5 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 B-MW2-RS CTC-B1W-R CTC-B25W GROUNDWATER INTERCEPTOR TRENCH CTC-B15W-R NES1366 NES1363 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT NES1364 CTC-B14W BH1 BH2 BH BH3BH BH5 BH6 BH CTC-B21W B-MW2-R CTC-B1W-RS CTC-B25WR STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 3 0 1 5 5 - B 2 LINDE FACILITY MAGNA, UTAH TPH-DRO CONCENTRATIONS IN SOIL SAMPLES FIGURE 6 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IN SOIL IS 5,000 mg/kg. RESULTS EXCEEDING THIS CRITERIA ARE SHOWN IN BOLD. LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION APPROXIMATE ABANDONED MONITORING WELL LOCATION APPROXIMATE SOIL BORING LOCATION (2015) APPROXIMATE SOIL BORING LOCATION (2019) APPROXIMATE SOIL BORING LOCATION (2020) FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 1.02.05.0 102040 1.9 0.251.1 8.8 73.2 3.8 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT CTC-B14W NES1366CTC-B25WR NES1364 NES1363 CTC-B21W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER AUGUST 20, 2019 FIGURE 7 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 1.0 1.4 0.26 3.9 3.7 5.0 10 4 0 2 0 2.0 23.3 50.3 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT CTC-B14W NES1366 NES1364 NES1363 CTC-B21W CTC-B25WR STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 3 6 1 1 2 - B 1 LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER NOVEMBER 14, 2019 FIGURE 8 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 1.0 2.05.0 10 20 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT 0.61 7.2 1.9 4.6 33.8 7.2 CTC-B14W NES1366 NES1363 CTC-B21W CTC-B25WR NES1364 STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER FEBRUARY 19, 2020 FIGURE 9 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 1.0 1.6 2.0 23.5 16.1 3.4 1.0 2.0 5.010 20 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT CTC-B14W NES1366CTC-B25WR NES1364 NES1363 CTC-B21W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER JUNE 25, 2020 FIGURE 10 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 1.0 0.18 1.9 12.6 2.6 3.6 2.0 5.0 10 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT 20.8 CTC-B14W NES1366CTC-B25WR NES1364 NES1363 CTC-B21W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER SEPTEMBER 17, 2020 FIGURE 11 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 4.7 38.7 39.6 6.4 2.1 2.0 5.0 5.0 10 20 2 0 10 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT NES1366 NES1363 CTC-B21W CTC-B25WR NES1364 0.57 CTC-B14W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER NOVEMBER 10, 2020 FIGURE 12 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 0.57 1.1 3.0 2.6 5.8 25.9 2.05.01020 2.0 5.0 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT NES1366 NES1363 CTC-B21W CTC-B25WR NES1364 CTC-B14W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER MARCH 31, 2021 FIGURE 13 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 1.0 0.93 2.0 5.0 10 2 0 3.4 2.4 3.9 39 22.9 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT CTC-B14W NES1366CTC-B25WR NES1364 NES1363 CTC-B21W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER JUNE 28, 2021 FIGURE 14 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 0.27 1.3 1.0 5.8 5.8 15.5 2.3 2.0 5. 0 1 0 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT NES1366 NES1363 CTC-B21W CTC-B25WR NES1364 CTC-B14W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER SEPTEMBER 14, 2021 FIGURE 15 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 1. 0 1.0 1.8 18.3 1.1 2. 0 5. 0 1 0 0.21 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT 15.0 NES1366 NES1363 CTC-B21W CTC-B25WR NES1364 CTC-B14W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER MARCH 29, 2022 FIGURE 16 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA GROUNDWATER INTERCEPTOR TRENCH 1.0 0.85 0.42 1.7 1. 0 14.5 0.51 1. 0 2.0 5.0 10 OPERATIONS BUILDING DISPENSER AREA EXTRACTION WELL VAULT NES1366 NES1363 CTC-B21W CTC-B25WR NES1364 CTC-B14W STATE ROUTE 201 FORMER DISPENSER AREA COOLING TOWER OP E R A T I O N S BU I L D I N G DIESEL FUEL AST DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER MARCH 28, 2023 FIGURE 17 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (1.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. 63 1 0 3 6 1 1 2 - B 1 DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 TIME TREND OF TOTAL DISSOLVED TPH IN GROUNDWATER FIGURE 18 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 TPH AND GROUNDWATER ELEVATION TIME TREND - NES-1363 FIGURE 19 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 TPH AND GROUNDWATER ELEVATION TIME TREND - NES-1364 FIGURE 20 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 TPH AND GROUNDWATER ELEVATION TIME TREND - NES-1366 FIGURE 21 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 TPH AND GROUNDWATER ELEVATION TIME TREND - CTC-B14W FIGURE 22 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 TPH AND GROUNDWATER ELEVATION TIME TREND - CTC-B21W FIGURE 23 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 TPH AND GROUNDWATER ELEVATION TIME TREND - CTC-B25WR FIGURE 24 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 WELL NES-1363 TPH-DRO CONCENTRATION TIME TREND AND EXPONENTIAL REGRESSION FIGURE 25 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH TH = 11.4 months DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 WELL NES-1364 TPH-DRO CONCENTRATION TIME TREND AND EXPONENTIAL REGRESSION FIGURE 26 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 WELL NES-1366 TPH-DRO CONCENTRATION TIME TREND AND EXPONENTIAL REGRESSION FIGURE 27 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 WELL CTC-B14W TPH-DRO CONCENTRATION TIME TREND AND EXPONENTIAL REGRESSION FIGURE 28 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 WELL CTC-B21W TPH-DRO CONCENTRATION TIME TREND AND EXPONENTIAL REGRESSION FIGURE 29 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631036112-A1 WELL CTC-B25W TPH-DRO CONCENTRATION TIME TREND AND EXPONENTIAL REGRESSION FIGURE 30 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 LINDE FACILITY MAGNA, UTAH Appendix A Mann-Kendall Statistical Analyses Mann-Kendall Statistical Test Instructions:Enter input data in yellow cells. To use the spreadsheet, provide a mimimum of four and up to a maximum of twenty rounds of data that are not seasonally affected. Use consistent units. The spreadsheet contains several error checks, and a data entry error may cause "DATA ERR" or "DATE ERR" to be displayed. Dates that are not consecutive will show an error message and will not display the test results. The spreadsheet tests the data for both increasing and decreasing trends at both 80 percent and 90 percent confidence levels. If an increasing or decreasing trend is not present, an additional coefficient of variation test is used to test for stability, as proposed by Wiedemeier et al, 1999. For non-detect values DO NOT ENTER 0. Enter half of the reported detection limit. If there are no data for a particular chemical, leave that cell blank. Site Name =Linde-Magna Facility No. = 4002146 Contaminant =TPH-DRO Monitoring Well=CTC-B14W Concentration Concentration Concentration Concentration Concentration Concentration Event Sampling Date (leave blank (leave blank (leave blank (leave blank (leave blank (leave blank Number (most recent last)if no data)if no data)if no data)if no data)if no data)if no data) 1 8/20/19 73.2 2 2/19/20 33.8 3 9/17/20 20.8 4 11/10/20 39.0 5 3/31/21 1.1 6 3/29/22 15.0 7 3/28/23 0.51 8 9 10 11 12 13 14 15 16 17 18 19 20 Mann Kendall Statistic (S) =-15.0 0.0 0.0 0.0 0.0 0.0 Number of Rounds (n) =7 0 0 0 0 0 Average =26.20 #DIV/0!#DIV/0!#DIV/0!#DIV/0!#DIV/0! Standard Deviation =25.414 #DIV/0!#DIV/0!#DIV/0!#DIV/0!#DIV/0! Coefficient of Variation(CV)=0.970 #DIV/0!#DIV/0!#DIV/0!#DIV/0!#DIV/0! Error Check, Blank if No Errors Detected n<4 n<4 n<4 n<4 n<4 Trend ≥ 80% Confidence Level DECREASING n<4 n<4 n<4 n<4 n<4 Trend ≥ 90% Confidence Level DECREASING n<4 n<4 n<4 n<4 n<4 Stability Test, If No Trend Exists at n<4 n<4 n<4 n<4 n<4 80% Confidence Level NA n<4 n<4 n<4 n<4 n<4 Data Entry By = PJB Date = 17-Apr-23 Checked By = Magna, Utah 84044 Mann-Kendall Statistical Test Instructions:Enter input data in yellow cells. To use the spreadsheet, provide a mimimum of four and up to a maximum of twenty rounds of data that are not seasonally affected. Use consistent units. The spreadsheet contains several error checks, and a data entry error may cause "DATA ERR" or "DATE ERR" to be displayed. Dates that are not consecutive will show an error message and will not display the test results. The spreadsheet tests the data for both increasing and decreasing trends at both 80 percent and 90 percent confidence levels. If an increasing or decreasing trend is not present, an additional coefficient of variation test is used to test for stability, as proposed by Wiedemeier et al, 1999. For non-detect values DO NOT ENTER 0. Enter half of the reported detection limit. If there are no data for a particular chemical, leave that cell blank. Site Name =Linde-Magna Facility No. = 4002146 Contaminant =TPH-DRO Monitoring Well=CTC-B25WR Concentration Concentration Concentration Concentration Concentration Concentration Event Sampling Date (leave blank (leave blank (leave blank (leave blank (leave blank (leave blank Number (most recent last)if no data)if no data)if no data)if no data)if no data)if no data) 1 11/14/19 23.3 2 6/25/20 3.4 3 9/17/20 3.6 4 11/10/20 39.6 5 3/31/21 25.9 6 3/29/22 18.3 7 3/28/23 14.5 8 9 10 11 12 13 14 15 16 17 18 19 20 Mann Kendall Statistic (S) =1.0 0.0 0.0 0.0 0.0 0.0 Number of Rounds (n) =7 0 0 0 0 0 Average =18.37 #DIV/0!#DIV/0!#DIV/0!#DIV/0!#DIV/0! Standard Deviation =12.838 #DIV/0!#DIV/0!#DIV/0!#DIV/0!#DIV/0! Coefficient of Variation(CV)=0.699 #DIV/0!#DIV/0!#DIV/0!#DIV/0!#DIV/0! Error Check, Blank if No Errors Detected n<4 n<4 n<4 n<4 n<4 Trend ≥ 80% Confidence Level No Trend n<4 n<4 n<4 n<4 n<4 Trend ≥ 90% Confidence Level No Trend n<4 n<4 n<4 n<4 n<4 Stability Test, If No Trend Exists at CV <= 1 n<4 n<4 n<4 n<4 n<4 80% Confidence Level STABLE n<4 n<4 n<4 n<4 n<4 Data Entry By = PJB Date = 17-Apr-23 Checked By = Magna, Utah 84044 Appendix B Quarterly Summary Report and Request for No Further Action (May 2021) APTIM 500 Penn Center Blvd., Suite 1000 Pittsburgh, PA 15235 Tel: 412.372.7701 Fax: 412.373.7135 www.aptim.com May 13, 2021 Project No. 631003879 Ms. Avery Holyoak Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West Salt Lake City, UT 84116 Re: Quarterly Summary Report and Request for No Further Action Facility ID 4002146; Leak ID: GAC Linde, Inc. (Former Union Carbide Corporation, Linde Division) 12385 West US Highway Alternate 40 Magna, Utah 84044 Dear Ms. Holyoak: On behalf of Linde, Inc. (Linde), Aptim Environmental & Infrastructure, LLC (APTIM) has prepared this Quarterly Summary Report for the former Union Carbide facility located in Magna, Salt Lake County, Utah (the site, Figure 1). This report presents the results from quarterly groundwater sampling and additional site characterization activities. This report also includes a request to the Utah Department of Environmental Quality (UDEQ), Division of Environmental Response and Remediation (DERR) to issue a No Further Action determination for the site and the reduction of groundwater monitoring and sampling events while UDEQ DERR reviews the document. Background and Site History In June 1991, a product line formerly connected to a closed-in-place diesel underground storage tank (UST) was determined to be the apparent source of soil and groundwater impacts at the site. A notification of release was called into the UDEQ DERR, and interim remedial actions were taken to minimize health, safety, and environmental risks. In 1994, Linde (formerly known as Praxair, Inc.), working in conjunction with the adjacent Kennecott Utah Copper (KUC) facility, began remediation of Linde’s diesel fuel release and KUC’s sulfuric acid release. Approximately 646 cubic yards of petroleum-contaminated soils were removed from the area of the former diesel UST during the construction of KUC’s groundwater recovery trench. In 1995, a closure report with a No Further Action request was submitted to the UDEQ DERR; a response was not received. On April 11, 2018, the UDEQ DERR issued a letter that required additional site characterization be conducted to evaluate appropriate cleanup actions. In response to the UDEQ DERR letter, a letter was Ms. Avery Holyoak Page 2 May 13, 2021 submitted to the UDEQ DERR in July 2018 agreeing to complete additional site characterization. Quarterly groundwater sampling was initiated in the first quarter of 2019 to obtain an accurate representation of groundwater quality. A meeting was conducted on May 15, 2019 at the UDEQ DERR Salt Lake City office. Personnel from APTIM and the UDEQ DERR were in attendance. The dialogue focused on site history, interim remedial activities, current site conditions, and the progress of ongoing characterization activities. While it was agreed that the nature and extent of impacts have not been fully characterized at the site, it was agreed that the additional site characterization data would be utilized to develop a conceptual site model and evaluate the most practical course of corrective action. The UDEQ DERR requested that Quarterly Summary Reports also be submitted during these activities. On February 24, 2020, the Second Quarter 2020 Summary Report was submitted to the UDEQ DERR. The UDEQ DERR issued a Comment Letter on March 4, 2020 requiring further investigation to determine the full extent of subsurface impacts. In March 2020, conference calls were held between APTIM and the UDEQ DERR to discuss Linde’s receipt of the Comment Letter and to discuss activity planning. The dialogue focused on verifying the location of the KUC interceptor trench which is located on the Linde facility. It was agreed that verifying the location of the trench would be necessary to evaluate the potential effects of pumping on groundwater conditions. On March 26, 2020, the site characterization strategy was finalized during a conference call. On July 23, 2020, a Work Plan for additional site characterization was submitted to the UDEQ DERR. The plan detailed the following site characterization activities: • Continued groundwater monitoring and sampling to define time trends and potential seasonal variability of contaminant concentrations • Soil screening and sampling during the installation of soil borings • Investigation of the KUC interceptor trench and its effects on groundwater chemistry, mobility, and migration, and its possible influence on plume stability • An updated, predictive fate and transport model representing worst case conditions On September 2, 2020, a conference call was conducted with personnel from APTIM and the UDEQ DERR. The dialogue focused on the verified location of the KUC interceptor trench and the rationale for selecting the proposed soil boring locations. In addition, the UDEQ DERR asked that the fate and transport model be updated to reflect seasonal fluctuations of contaminant concentrations representing worst case conditions as well as the influence of the KUC interception trench. The following information summarizes the first quarter 2021 groundwater sampling activities, additional site characterization activities, and current site conditions. Groundwater Monitoring and Sampling Activities During the March 31, 2021 quarterly groundwater sampling event, APTIM personnel conducted a site-wide inspection and opened each monitoring well to allow water levels to equilibrate. Following the equilibrium of monitoring well fluid elevations, all monitoring wells were gauged for fluid elevations using an oil/water Ms. Avery Holyoak Page 3 May 13, 2021 interface probe. A summary of shallow water table elevation measurements is presented in Table 1, and the monitoring well network is shown on Figure 2. Groundwater samples were collected from Monitoring Wells NES-1363, NES-1364, NES-1366, CTC-B14W, CTC-B21W, and CTC-B25W/CTC-B25WR using disposable, weighted polyethylene bailers or a peristaltic pump. A minimum of three well volumes were purged from each monitoring well prior to collecting groundwater samples. Depth-to-water measurements were used to calculate well volumes. A groundwater sample was collected from the interceptor trench operated by KUC. All purge water was containerized into appropriately labeled Department of Transportation-approved 55-gallon drums for disposal at an appro- priate off-site location. Sampling activities were performed by a Utah-certified UST Groundwater and Soil Sampler, as required by Utah state law. Samples for analysis of volatile organic compounds (VOCs) were collected in 40-milliliter vials with zero headspace to prevent the loss of VOCs prior to analysis. Each vial included a laboratory-provided aliquot of hydrochloric acid to reduce the pH of the sample to less than 2 standard units. All samples were appropriately labeled and handled following standard industry practices of icing the samples in coolers upon their collection to a temperature of approximately 4 degrees Celsius and shipping the samples to the receiving laboratory (Pace Analytical Services, LLC) via overnight courier using standard chain-of-custody procedures. Groundwater samples were analyzed for benzene, toluene, ethylbenzene, total xylenes, (BTEX), and naphthalene using U.S. Environmental Protection Agency (USEPA) Method 8260B and total petroleum hydrocarbons-diesel range organics (TPH-DRO) using USEPA Method 8015D. The complete laboratory analytical report is included in Appendix A. Groundwater Monitoring and Sampling Analytical Results Groundwater monitoring data were used to construct groundwater elevation contour maps from each quarterly sampling event. Groundwater elevation contour maps constructed from the first quarter data are presented as Figure 3. During the most recent groundwater monitoring event, groundwater was gauged at depths ranging from approximately 12.99 feet below ground surface (bgs) in NES-1364 to 16.58 feet bgs in CTC-B25WR. The shallow groundwater flow direction is to the northeast with a gradient of approximately 0.02. This is consistent with the historical groundwater flow at the site. Groundwater gauging results are summarized in Table 1. During the first quarter of 2021, the applicable remedial standard for TPH-DRO (Tier 1 Screening Criteria of 10 milligrams per liter [mg/L]) was slightly exceeded in one on-site monitoring well (CTC-B25WR at 25.9 mg/L). The concentrations of the remaining constituents of concern (BTEX and naphthalene) were less than their respective remedial standards. Groundwater sampling results are summarized in Table 2. An isoconcentration map of TPH-DRO constructed from the March 2021 quarterly sampling data (Figure 4) illustrates that groundwater impact is isolated and limited to the area of the former diesel UST. Soil Boring and Sampling Activities During the fourth quarter of 2020, additional site characterization activities included eight soil borings (BH 1 through BH 8) were advanced using direct push techniques by Direct Push Services, LLC. Soil borings were advanced to a depth of 17 feet bgs, except for Soil Boring BH1, which was advanced to a depth of 8 feet bgs. The soils were screened in 2-foot intervals using a photoionization detector (PID) equipped with a 10.6 eV lamp. Ms. Avery Holyoak Page 4 May 13, 2021 Each soil boring was visually inspected and a portion of each 2-foot sample interval was placed into a plastic Ziplock® bag for headspace screening of VOCs utilizing the PID. Inspection and screening of the soil occurred from the ground surface to the bottom of the boring. Each 2-foot soil sample interval was characterized and logged in the field by a Utah-certified UST sampler using the Unified Soil Classification System. PID readings are provided on the boring logs presented in Appendix B. Three soil samples were collected from each soil boring (except for BH 1, where only two samples were collected) to characterize all depths of soil that could be potentially impacted with TPH-DRO. Soil samples were collected from each of the eight borings (5- to 7-foot interval, 10- to 12-foot interval, and 15- to 17-foot interval) for a total of 23 soil samples. Based upon historical groundwater monitoring data, the 15- to 17-foot interval sample will be considered the soil sample below the water table. If higher PID readings were exhibited at another interval, the intervals displaying the highest PID readings were collected. The soil samples were submitted to Pace Analytical Services, LLC for TPH-DRO, BTEX, and naphthalene analysis. Soil Boring Sampling Results During the fourth quarter 2020 soil sampling event, concentrations of TPH-DRO exceeding the Tier 1 standard of 5,000 milligrams per kilogram (mg/kg) were limited to one soil sample (BH 5, 13 to 15 feet) where TPH-DRO concentrations were reported at 5,230 mg/kg. The soil impact is limited, isolated, and confined to the vicinity of the source area near the former diesel UST. Additional soil sampling conducted during this reporting period (conducted in November 2020) indicates that all other concentrations of BTEX, naphthalene, and TPH-DRO had not been detected at levels exceeding the Tier 1 standards. A summary of the soil analytical results is presented in Table 3, and the laboratory analytical reports are contained in Appendix C. Historical soil data are presented in Appendix D. Trend Analyses At the request of UDEQ DERR, a groundwater monitoring program was reinitiated in 2019 and sampling has been conducted quarterly from 2019 through 2021. Historically, groundwater analytical results show that TPH-DRO concentrations at Monitoring Wells CTC-B14W and CTC-B25WR have exceeded the Tier 1 Screening Criteria. The TPH-DRO concentrations at Monitoring Wells CTC-B14W and CTC-B25WR have fluctuated over the last few years, although they are still within the range of concentrations measured at this location since the groundwater monitoring program was reinstated in 2019. When the TPH-DRO concentrations are plotted against the groundwater elevations for Monitoring Wells CTC-B14W and CTC-B25WR, the graphs illustrate that the highest TPH-DRO concentrations have occurred when the low seasonal groundwater levels were recorded. Thus, the observed TPH-DRO concentrations at CTC-B14W and CTC-B25WR display seasonality attributed to fluctuations in the water table (Figures 5 and 6). To account for the seasonal variability, Mann-Kendall statistical analyses were conducted for the highest seasonal TPH-DRO concentrations (e.g., corresponding with low seasonal groundwater levels) at Monitoring Wells CTC-B14W and CTC-B25WR throughout 2019, 2020, and 2021. The statistical trend analyses of TPH-DRO concentrations in groundwater samples from CTC-B14W indicate a decreasing Ms. Avery Holyoak Page 5 May 13, 2021 trend. The analyses conducted on CTC-B25WR indicated stable TPH-DRO concentrations. The Mann- Kendall statistical tests are presented in Appendix E. Monitoring Wells NES-1363, NES-1364, NES-1366, CTC-B14W, and CTC-B21W are located downgradient of the plume, and long-term monitoring data indicate that TPH-DRO concentrations have consistently been less than the Tier 1 Screening Criteria. The extent of TPH-DRO impact appears to be isolated and limited to the area of the former UST. Since the closure of the UST system and removal of approximately 646 cubic yards of soils in 1994, sufficient time has elapsed for leaching from soil to groundwater to have occurred. This is verified by stable to decreasing concentrations in the site groundwater, indicating that the groundwater is not receiving any significant additional contaminant mass from the soil. Fate and Transport Plume migration in groundwater at the site was modeled in order to aid site characterization efforts and to evaluate the potential for future off-site migration. The fate and transport analysis was conducted to determine the extent and concentrations of TPH-DRO in the groundwater plume that may be generated by the residual soil/groundwater concentrations. A USEPA-approved fate and transport model was used to calculate the concentrations of TPH-DRO in groundwater downgradient of the source area to predict how the plume will migrate and biodegrade over time. Fate and transport of TPH-DRO (i.e., the primary chemical of concern [COC]) in affected environmental media are dependent on the physical and chemical properties of the COC and the geochemical and hydraulic properties of the subsurface environment. Contaminants may exist in four phases in a subsurface environment from a release of a hazardous substance. The four phases include free phase (nonaqueous- phase liquid), sorbed phase (adsorbed to organics or clay soil particles), aqueous phase (dissolved in water), and gaseous phase (volatilization from soil or water to air). Commonly, contaminants exist in multiple phases with some degree of partitioning between phases. The contaminant phase depends not only on the properties of the COC and the site-specific geological properties but also on the magnitude and extent of the release. APTIM developed a groundwater flow and transport model to simulate the movement of groundwater impacted by diesel fuel in the shallow water-bearing zone and the fate and transport of TPH constituents in the groundwater. Historically, TPH impacts are limited to an area along the western edge of the site, within and adjacent to the former diesel UST area. The shallow water-bearing zone aquifer has the higher concentrations of TPH-DRO; however, the time-concentration trend analyses of groundwater concentrations appear to be at steady state conditions and have remained relatively consistent since 2015. Groundwater Transport Modeling Update In February 2020, APTIM developed a groundwater flow and transport model to simulate the movement of groundwater impacted by diesel fuel in the shallow water-bearing zone and the fate and transport of TPH constituents in the groundwater. The model has been updated to include the results of the November 2020 confirmation soil sampling event and the operation of the groundwater interceptor trench located to the south of the Operations Building. The groundwater flow modeling was performed using the U.S. Geological Survey MODFLOW 2005 (Harbaugh, 2005) numerical groundwater flow model. The groundwater transport modeling was conducted Ms. Avery Holyoak Page 6 May 13, 2021 with the MT3DMS Version 5.3 (Zheng, 2010) transport model. The Groundwater Vistas 6 software system (Rumbaugh and Rumbaugh, 2011, Environmental Simulations, Inc.) was used as the graphical user’s interface for model set up and the processing of simulation output. The objectives of the modeling are to simulate the TPH concentrations downgradient of the former UST source and to assess if natural attenuation processes can decrease the TPH concentrations to less than the TPH screening level of 10 mg/L. The model characteristics are the same as the February 2020 model. The model area extends 300 feet from southwest to northeast and is 200 feet across. The southwest boundary of the model is located approximately 80 feet upgradient of the center of the former UST area. The northeast model boundary is located approximately 220 feet northeast (downgradient) of the former UST area. The north downgradient corner of the model is located along State Route 201. The model area is subdivided in 60 columns and 40 rows of grid cells. The columns and rows are numbered from the west corner of the model area starting with Column 1 and Row 1. The grid cell widths are 5 feet in the model area. The model consists of one model layer (Model Layer 1) to represent the shallow water-bearing zone. The top elevation of the model was assigned to be 4,250 feet above mean sea level (msl), which is the approximate elevation of the ground surface in the upgradient area. The model bottom elevation was assigned as 4,230 feet msl at the base of the groundwater zone. Boundary conditions were assigned to the model boundaries to represent the hydrologic conditions of the site and control the site-wide pattern of topography-driven groundwater flow. The groundwater in the model area is sourced from recharge by precipitation, and the water table elevation is highest in the southwestern part of the model area so the groundwater flow lines are oriented generally from southwest to northeast. General head boundary conditions were assigned to the side boundaries. The recharge rate was assigned to be 2 inches per year (0.00046 foot per day) based on regional hydrology and as a model calibration parameter. The horizontal hydraulic conductivity of the model layer was assigned a value of 1 foot per day based on hydraulic testing results. The groundwater interceptor trench is approximately 200 feet long and extends from near the south boundary of the facility to approximately 15 feet west of Well NES-1364. The northernmost 50 feet of the trench is located within the model area and directly downgradient (northeast) of the source area related to the USTs. The USTs were located upgradient of Well CTC-B25WR, soil sample location BH 5, Well CTC- B14W, and Well CTC-B21W. The removal of groundwater from the interceptor trench was modeled with a line of five wells located in columns 27, 28, and 29 of the model. The modeled groundwater flow was sensitive to the recovery pumping rate because of the thinness of the groundwater zone. The total rate of removal of groundwater from the portion of the trench located in the model area was 0.25 gallon per minute. The operation of the interceptor trench generates a cone of depression in the hydraulic head distribution that intercepts the southeastern side of the area of affected groundwater. Transport Modeling MT3DMS was used to simulate the fate and transport of TPH-DRO. The configuration of the occurrence of dissolved TPH was approximated by assigning initial concentrations to model grid cells in the area adjacent to the dispenser area. The initial concentrations included 1 mg/L, 10 mg/L, 100 mg/L, and 300 mg/L. The initial concentration distribution was modified based on the November 2020 confirmation soil sampling results. The area of higher initial concentrations was extended southeastward toward Ms. Avery Holyoak Page 7 May 13, 2021 Well CTC-B25WR to include the location of confirmation soil sample BH 5. The concentration of TPH-DRO at soil sample location BH 5 was 5,230 mg/kg in the soil sample from the 13- to 15-foot depth, which is the approximate depth of the top of the groundwater-saturated zone. The MT3DMS transport modeling was set up based on the steady-state MODFLOW-generated groundwater volume fluxes between the model grid cells. For the transport modeling, the porosity was assigned to be 0.4 (dimensionless), the bulk density of the water-bearing zone was 1.6 grams per cubic centimeter (gm/cm3), the longitudinal dispersivity was 5 feet, and the transverse dispersivity values were 1 foot. The distribution coefficient Kd was used to represent the amount of constituent adsorption and the resulting retardation factor R for linear adsorption isotherm conditions. The distribution coefficient varies with the component constituents of TPH compounds, but a value of 0.25 milliliter per gram (mlLgm) was used to represent soluble constituents such as naphthalene and this gave a retardation factor of 2 (dimensionless). The Kd value was assigned as 1.3 mL/gm to represent more adsorptive components with a retardation factor of 6.2 and was used in the area with the highest initial concentrations of 10 mg/L to 300 mg/L. The higher retardation factor in the source zone was used to simulate the occurrence of residual constituents that could leach and desorb over time. Based on literature data and project experience, the degradation rate constant k was assigned to be 0.2 per year (1/year), corresponding to a constituent half- life of 3.4 years (1,263 days) in the source area. This conservative degradation rate is in the lower end of the range of TPH degradation rates. A higher degradation rate constant of 0.69 1/year (half-life of 1 year or 365 days) was used to represent more rapid degradation in the downgradient low-concentration area. The MT3DMS model was run with a starting transport time step size of 1 day, which increased with a time- step multiplier of 1.2 during the 20-year (7,300-day) and 30-year (10,950 day) simulation times to a maximum of 50 days. The simulation output was reviewed and evaluated at approximate 1-year intervals. The MT3DMS fate and transport modeling showed that the movement of TPH-DRO from the source area of the former UST is limited by adsorption and degradation and affected by the recovery of groundwater by the interceptor trench. Figure 7 shows the simulated TPH-DRO concentration contours at times of 5, 10, 15, 20, 25, and 30 years after the development of the source area. The simulations show that TPH-DRO concentrations decrease slowly in the source area and that the downgradient movement of the dissolved constituent plume is slow. The 10 mg/L concentration contour is modeled to move downgradient past well NES-1363 after 5 years of simulation time and then is stabilized in position until approximately 20 years of transport. The movement of impacted groundwater to the interceptor trench contributes to stabilizing the groundwater plume and decreasing the mass and concentrations of constituents in the groundwater. After 20 years of simulation time, the 10 mg/L concentration contour is predicted to retreat upgradient. The predicted TPH-DRO concentrations at Well NES-1363 would be approaching 10 mg/L after 25 to 30 years of transport time. The monitored concentrations of TPH-DRO in the wells are in general correspondence with the modeling predictions. Well CTC-B14W, downgradient of the source area, has shown monitored concentrations in the range of 20 to 50 mg/L during the 2015 to 2020 time interval and the model-predicted concentrations were 37 to 52 mg/L for 25 to 30 years of transport. The concentrations of TPH-DRO in Well CTC-B21W have been predominantly in the range of 2 to 3.7 mg/L and were predicted to be 3 to 4 mg/L after 25 to 30 years of transport. Well NES-1363, downgradient of the source area, has shown TPH-DRO concentrations ranging from 1.3 to 6.89 mg/L during the 2015 to 2020 time period. The model-predicted TPH-DRO concentrations for well NES-1363 were 23 to 36 mg/L for 25 to 30 years of transport. The transport model results are conservative and predict the TPH-DRO concentrations to attenuate more slowly than observed. Ms. Avery Holyoak Page 8 May 13, 2021 The fate and transport simulations for the cases evaluated show that groundwater with TPH-DRO concentrations greater than 10 mg/L would not move more than 10 to 20 feet downgradient of Well NES- 1363 and would not move downgradient of the facility property. Based on the modeled and monitored behavior of the dissolved TPH-DRO plume, the impacted groundwater is expected to remain in the vicinity of the former UST area. Conclusions Linde has completed the additional characterization activities as requested by the UDEQ DERR. The analytical results from the confirmatory soil sampling conducted in November 2020 indicate that all concentrations are less than the Tier 1 standard, with the exception of one soil sample (BH 5, 13 to 15 feet), located within the identified TPH-DRO plume between CTC-B14W and CTC-B25WR (east the former diesel UST), that exceeded the Tier 1 screening criteria for TPH-DRO. Based on the updated site conceptual model, impacts in groundwater are delineated. Groundwater impacts are confined to a small area of the property near the former diesel UST, and no impacts beyond the current groundwater monitoring well network are occurring. The fate and transport analysis demonstrated that the groundwater velocities of TPH-DRO are low, and monitoring data indicate that groundwater impact is limited to the vicinity of the former UST area and will not extend beyond the point of compliance. There are no receptors that will come into contact with impacted groundwater. Request for No Further Action and Modification to Groundwater Sampling Linde has demonstrated that the historical release from 1991 has no impact to human health or the environment, and it is determined that applicable minimum standards cannot reasonably be achieved for TPH-DRO. The laboratory test results for TPH are too non-specific to be of real value in the assessment of potential health risks at sites. Specific compounds for diesel constituents of concern (BTEX and naphthalene) where analyzed and provide unequivocal analytical results for comparison to cleanup standards. Analytical results for BTEX and naphthalene in soil and groundwater were below Tier 1 Screening Criteria establishes in the Utah Department of Environmental Quality Guidelines for Utah's Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3, dated March 2015. Linde has corroborated the source removal of 646 cubic yards of petroleum-contaminated soils in 1994, the extent of the contamination is expected to remain in the vicinity of the former UST area, and its relationship to present and potential surface and groundwater locations and their uses is unlikely. Linde respectfully requests that the UDEQ DERR issue a determination for a No Further Action status for the site. Linde requests the reduction of groundwater monitoring and sampling events to be conducted at Monitoring Wells NES-1363, NES-1364, CTC-B14W, CTC-B21W, CTC-B25W/CTC-B25WR, and the interceptor trench semiannually while UDEQ DERR reviews the document. Ms. Avery Holyoak Page 9 May 13, 2021 Should you have any questions or require any additional information regarding this report, please contact Paul Bauer at (412) 858-1594 or via electronic mail to paul.bauer@aptim.com. Sincerely, Paul Bauer Ronald Malec, P.G. Project Manager Project Manager paul.bauer@aptim.com Ron.Malec@aptim.com PJB:RM:lmk Attachments cc: Scott Poole - Linde References References Anderson, M.P., W.W. Woessner, and R.J. Hunt, 2015, Applied Groundwater Modeling: Simulation of Flow and Advective Transport, Second Edition, Elsevier Academic Press, Inc., New York, 564 pp. Harbaugh, A.W., 2005, MODFLOW-2005, The U.S. Geological Survey Modular Ground-Water Model—The Ground-Water Flow Process, U.S. Geological Survey Techniques and Methods 6-A16. Rumbaugh, J.O. and D.B. Rumbaugh, 2011, Groundwater Vistas Version 6 User’s Manual, Environmental Simulations, Inc., Reinholds, PA. Mann-Kendall Statistical Test, Microsoft Excel®-based calculation tool. Zheng, C., 2010, MT3DMS v5.3, Supplemental User’s Guide, Technical Report to the U.S. Army Engineer Research and Development Center, Department of Geological Sciences, University of Alabama, 51 p. Zheng, C. and G.D. Bennett, 2002, Applied Contaminant Transport Modeling, Second Edition, Wiley- Interscience, New York, 621 p. Tables Table 1 Groundwater Elevation Data Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Well Identification Reference Elevation (ft msl)1 Groundwater Measurement Date Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) Depth to Water (ft) Groundwater Elevation (ft msl) 7/23/2015 16.10 4230.40 16.21 4228.77 17.89 4230.53 17.81 4231.75 15.90 4230.98 18.21 4231.81 9/17/2015 15.92 4230.58 15.98 4229.00 18.25 4230.17 17.94 4231.62 15.84 4231.04 18.62 4231.40 3/20/2019 14.95 4231.55 13.75 4231.23 15.60 4232.82 16.39 4233.17 15.01 4231.87 15.95 4234.07 5/21/2019 NA ---NA ---NA ---NA ---NA ---NA --- 8/20/2019 13.43 4233.07 11.90 4233.08 14.75 4233.67 14.52 4235.04 13.42 4233.46 15.31 4234.71 11/14/2019 14.32 4232.18 12.51 4232.47 14.55 4233.87 14.41 4235.15 14.32 4232.56 15.96 4234.06 2/19/2020 13.67 4232.83 12.20 4232.78 14.85 4233.57 14.72 4234.84 13.84 4233.04 15.47 4234.55 6/25/2020 13.73 4232.77 13.39 4231.59 15.13 4233.29 14.81 4234.75 13.72 4233.16 15.69 4234.33 9/17/2020 14.71 4231.79 13.68 4231.30 16.29 4232.13 15.87 4233.69 14.65 4232.23 16.70 4233.32 11/10/2020 13.67 4232.83 13.23 4231.75 16.35 4232.07 15.85 4233.71 14.65 4232.23 16.70 4233.32 3/31/2021 14.50 4232.00 12.99 4231.99 16.15 4232.27 15.58 4233.98 14.46 4232.42 16.58 4233.44 Footnotes: 1 ft msl - Feet above mean sea level. 4250.02 NES-1363 NES-1364 NES-1366 CTC-B14W CTC-B21W CTC-B25W/CTC-B25WR 4246.50 4244.98 4248.42 4249.56 4246.88 Page 1 of 1 Table 2 Groundwater Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 11 07/23/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.0005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 6.89 1.7 1.3 1.9 1.4 1.9 1.6 1.9 4.7 3.0 Naphthalene 0.7 ND 0.005 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 Tier 11 07/23/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.0005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 1.04 1.7 1.5 3.8 3.9 4.6 2.0 2.6 6.4 2.6 Naphthalene 0.7 ND 0.005 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 NES-1363 NES-1364 Page 1 of 4 Table 2 Groundwater Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 11 07/23/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.0005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 0.296 0.25 0.18 0.25 0.26 0.61 1.00 0.18 0.57 0.21 Naphthalene 0.7 ND 0.005 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 Tier 12 09/17/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 0.00147 0.0018 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 0.0011 ND 0.001 ND 0.001 Toluene 3 ND 0.005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 0.0033 0.0074 0.0011 0.0011 0.0011 ND 0.001 ND 0.001 0.0013 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 44.8 168 33.2 73.2 50.3 33.8 23.5 20.8 38.7 1.1 Naphthalene 0.7 ND 0.005 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 NES-1366 CTC-B14W Page 2 of 4 Table 2 Groundwater Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 12 07/23/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.0005 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 ND 0.003 TPH-DRO 10 NA 2.3 2.7 8.8 3.7 7.2 16.1 12.6 2.1 5.8 Naphthalene 0.7 0.00028 J ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 ND 0.002 Tier 12 09/17/15 03/20/19 05/21/19 08/20/19 11/14/19 02/19/20 06/25/20 09/17/20 11/10/20 03/31/21 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.001 NA ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Toluene 3 ND 0.005 NA ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 ND 0.001 Ethylbenzene 4 0.00216 NA ND 0.001 ND 0.001 0.0491 0.0561 0.0656 0.0469 0.0624 0.0671 Total Xylenes 10 ND 0.003 NA ND 0.003 ND 0.003 0.0094 0.011 0.0124 0.0082 0.0099 0.0098 TPH-DRO 10 5.28 NA 0.73 1.1 23.3 7.2 3.4 3.6 39.6 25.9 Naphthalene 0.7 ND 0.005 NA ND 0.002 ND 0.002 0.0084 0.009 0.0089 0.0088 0.0098 0.0067 CTC-B25W/CTC-B25WR CTC-B21W Page 3 of 4 Table 2 Groundwater Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 12 11/10/20 03/31/21 Contaminant (mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L)(mg/L) Benzene 0.3 ND 0.001 ND 0.001 Toluene 3 ND 0.001 ND 0.001 Ethylbenzene 4 ND 0.001 ND 0.001 Total Xylenes 10 ND 0.003 ND 0.003 TPH-DRO 10 0.46 1.7 Naphthalene 0.7 ND 0.002 ND 0.002 Notes: 1 Tier 1 Screening Criteria (Tier 1) taken from Utah Department of Environmental Quality Guildelines for Utah's Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3 dated March 2015. mg/L = Milligram per liter. NA = Not analyzed. ND 0.00123 = Concentration not detected at the laboratory specified detection limit. J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. Sample results that exceed the Tier 1 Screening Criteria (Tier 1) appear in black shaded cells with bold white text. TRENCH-1 Page 4 of 4 Table 3 Confirmation Soil Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 11 BH 1 BH 1 BH 2 BH 2 BH 2 BH 3 BH 3 BH 3 BH 4 BH 4 BH 4 Contaminant (mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg) Date -11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 11/11/20 PID Reading (ppm) -0.7 0.8 0.4 1.9 1.2 4.6 3.6 5.2 5.3 4.2 3.3 Depth of Sample (ft. bgs)-5-7 7-8 5-7 10-12 15-17 5-7 10-12 15-17 5-7 10-12 15-17 Benzene 0.9 ND 0.0005 ND 0.0012 ND 0.0012 ND 0.0022 ND 0.0022 ND 0.0017 ND 0.0022 ND 0.0012 ND 0.0023 ND 0.0020 ND 0.0019 Toluene 25 ND 0.0005 ND 0.0012 ND 0.0012 ND 0.0022 ND 0.0022 ND 0.0017 ND 0.0022 ND 0.0012 ND 0.0023 ND 0.0020 ND 0.0019 Ethylbenzene 23 ND 0.0005 ND 0.0012 ND 0.0012 ND 0.0022 ND 0.0022 ND 0.0017 ND 0.0022 ND 0.0012 ND 0.0023 ND 0.0020 ND 0.0019 Total Xylenes 142 ND 0.001 ND 0.0023 ND 0.0025 ND 0.0044 ND 0.0044 ND 0.0033 ND 0.0045 ND 0.0024 ND 0.0046 ND 0.0041 ND 0.0037 TPH-DRO 5,000 ND 14.3 ND 14.1 ND 14.2 14.4 22.3 21.4 17.5 ND 14.2 82.8 41.3 29.8 Naphthalene 51 ND 0.0005 ND 0.0012 ND 0.0012 ND 0.0022 ND 0.0022 ND 0.0017 ND 0.0022 ND 0.0012 ND 0.0023 ND 0.0020 ND 0.0019 Tier 11 BH 5 BH 5 BH 5 BH 6 BH 6 BH 6 BH 7 BH 7 BH 7 BH 8 BH 8 BH 8 Contaminant (mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg) Date -11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 11/12/20 PID Reading (ppm)-3.0 139.2 54.4 3.5 1.9 24.0 4.3 1.9 2.1 6.4 4.4 7.5 Depth of Sample (ft. bgs)-10-12 13-15 15-17 5-7 10-12 15-17 5-7 10-12 15-17 5-7 10-12 15-17 Benzene 0.9 ND 0.0024 ND 0.110 ND 0.0024 ND 0.0019 ND 0.0017 ND 0.0022 ND 0.0017 ND 0.0019 ND 0.0017 ND 0.0018 ND 0.0021 ND 0.0026 Toluene 25 ND 0.0024 ND 0.110 ND 0.0024 ND 0.0019 ND 0.0017 ND 0.0022 ND 0.0017 ND 0.0019 ND 0.0017 ND 0.0018 ND 0.0021 ND 0.0026 Ethylbenzene 23 ND 0.0024 ND 0.110 ND 0.0024 ND 0.0019 ND 0.0017 ND 0.0022 ND 0.0017 ND 0.0019 ND 0.0017 ND 0.0018 ND 0.0021 ND 0.0026 Total Xylenes 142 ND 0.0049 0.41 ND 0.0049 ND 0.0037 ND 0.0034 ND 0.0043 ND 0.0035 ND 0.0038 ND 0.0034 ND 0.0036 ND 0.0042 ND 0.0052 TPH-DRO 5,000 ND 14.0 5,230 77.8 ND 15.2 ND 14.0 ND 14.3 ND 15.2 ND 15.4 18.3 ND 14.3 ND 13.9 ND 14.0 Naphthalene 51 ND 0.0024 15.8 0.0055 ND 0.0019 ND 0.0017 ND 0.0022 ND 0.0017 ND 0.0019 ND 0.0017 ND 0.0018 ND 0.0021 0.0963 Notes: TPH-DRO - Total Petroleum Hydrocarbons-Diesel Range Organics 1 Tier 1 Screening Criteria (Tier 1) taken from Utah Department of Environmental Quality Guidelines for Utah's Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3 dated March 2015. mg/kg = Milligram per kilogram. ND 0.005 = Concentration not detected at the laboratory specified detection limit. Sample results that exceed the Tier 1 Screening Criteria (Tier 1) appear in black shaded cells with bold white text. Soil Analytical Results (mg/kg) Soil Analytical Results (mg/kg) Figures FORMER DISPENSER AREA OPERATIONS BUILDING DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA CTC-B16W CTC-B10W CTC-B21W CTC-B14W NES1365 NES1376 TF-14 B-MW24-R B-MW24-RS CTC-B17W-R CTC-B25W GROUNDWATER INTERCEPTOR TRENCH FORMER SERVICE LINES TRENCH EXTRACTION WELL VAULT NES1363 CTC-B15W-R NES1366 MW-26 NES1364 CTC-B17W-RSCTC-B25WR BH1 BH2 BH8 BH3BH4 BH5 BH6 BH7 STATE ROUTE 201 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER OP E R A T I O N S B U I L D I N G DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 0 3 8 7 9 - B 2 2 LINDE FACILITY MAGNA, UTAH SITE PLAN FIGURE 2 LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELLLOCATION APPROXIMATE ABANDONEDMONITORING WELL LOCATION APPROXIMATE MONITORING WELLLOCATION (NOT USED FOR SITECHARACTERIZATION) APPROXIMATE SOIL BORING LOCATION(2015) APPROXIMATE SOIL BORING LOCATION(2019) APPROXIMATE SOIL BORING LOCATION(2020) APPROXIMATE GAS LINE APPROXIMATE ELECTRIC LINE APPROXIMATE WATER LINE APPROXIMATE STORM WATER LINE NOTE: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' FORMER DISPENSER AREA OPERATIONS BUILDING DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA CTC-B21W CTC-B14W GROUNDWATER INTERCEPTOR TRENCH NES1364 (4233.98) 4232 4233 423 2 (4232.42) (4231.99) CTC-B25WR(4233.44) NES1363(4232.00) 423 3 EXTRACTION WELL VAULT (4232.27) NES1366 STATE ROUTE 201 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER OP E R A T I O N S B U I L D I N G DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 0 3 8 7 9 - B 2 4 LINDE FACILITY MAGNA, UTAH GROUNDWATER ELEVATION CONTOUR MAP MARCH 31, 2021 FIGURE 3 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION GROUNDWATER ELEVATION (FT MSL) GROUNDWATER CONTOUR (DASHED WHERE INFERRED) APPARENT GROUNDWATER FLOW DIRECTION NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. HYDRAULIC GRADIENT = 0.02 FT/FT AS DERIVED FROM THE FOLLOWING CALCULATION: CTC-B25WR (4233.44) - NES-1364 (4231.99) 62 FT (4232.00) 4232 FORMER DISPENSER AREA OPERATIONS BUILDING DIESEL FUEL AST COOLING TOWER STATE ROUTE 201 DISPENSER AREA CTC-B21W GROUNDWATER INTERCEPTOR TRENCH NES1364 NES1366 NES1363 (5.8) (3.0) (2.6) (0.21)CTC-B25WR (25.9) EXTRACTION WELL VAULT CTC-B14W 1 0 (1.1) STATE ROUTE 201 FORMER DISPENSER AREA DIESEL FUEL AST COOLING TOWER OP E R A T I O N S B U I L D I N G DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 0 3 8 7 9 - B 2 5 LINDE FACILITY MAGNA, UTAH TPH-DRO ISOCONCENTRATIONS IN GROUNDWATER MARCH 31, 2021 FIGURE 4 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 MAP KEY SCALE: 1" = 300' LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION TPH-DRO CONCENTRATION (mg/L) TPH-DRO ISOCONCENTRATION CONTOUR (3.0) 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH-DRO = TOTAL PETROLEUM HYDROCARBONS - DIESEL RANGE ORGANICS. 3. THE UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY TIER I SCREENING CRITERIA (TIER I) STANDARD FOR TPH-DRO IS 10 mg/L. DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631003879-A2 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 TIME TREND ANALYSES - CTC-B14W TPH-DRO CONCENTRATIONS VERSUS GROUNDWTER ELEVATION FIGURE 5 LINDE FACILITY MAGNA, UTAH DESIGNED BYDATEOFFICE DRAWING NUMBER CHECKED BYDRAWN BY APPROVED BY 631003879-A3 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 TIME TREND ANALYSES - CTC-B25WR TPH-DRO CONCENTRATIONS VERSUS GROUNDWTER ELEVATION FIGURE 6 LINDE FACILITY MAGNA, UTAH FORMER DISPENSER AREA OPERATIONS BUILDING DISPENSER AREA FORMER SERVICE LINES TRENCH EXTRACTION WELL VAULT CTC-B25W 0.1 1.0 10100 CTC-B21W NES1363 NES1364 CTC-B25WR CTC-B14W NES1366 FORMER DISPENSER AREA OPERATIONS BUILDING DISPENSER AREA FORMER SERVICE LINES TRENCH EXTRACTION WELL VAULT CTC-B25W 1.0 10100 0.1 CTC-B21W NES1363 NES1364 CTC-B25WR CTC-B14W NES1366 FORMER DISPENSER AREA OPERATIONS BUILDING DISPENSER AREA FORMER SERVICE LINES TRENCH EXTRACTION WELL VAULT CTC-B25W 1.0 10010 0.1 CTC-B21W NES1363 NES1364 CTC-B25WR CTC-B14W NES1366 FORMER DISPENSER AREA OPERATIONS BUILDING DISPENSER AREA FORMER SERVICE LINES TRENCH EXTRACTION WELL VAULT CTC-B25W 0.1 10 1.0 CTC-B21W NES1363 NES1364 CTC-B25WR CTC-B14W NES1366 FORMER DISPENSER AREA OPERATIONS BUILDING DISPENSER AREA FORMER SERVICE LINES TRENCH EXTRACTION WELL VAULT CTC-B25W 0.1 1.0 10 CTC-B21W NES1363 NES1364 CTC-B25WR CTC-B14W NES1366 FORMER DISPENSER AREA OPERATIONS BUILDING DISPENSER AREA FORMER SERVICE LINES TRENCH EXTRACTION WELL VAULT CTC-B25W 0.1 1.0 10 CTC-B21W NES1363 NES1364 CTC-B25WR CTC-B14W NES1366 DE S I G N E D B Y DA T E OF F I C E DR A W I N G NU M B E R CH E C K E D B Y DR A W N B Y AP P R O V E D B Y 63 1 0 0 3 8 7 9 - B 2 3 PRAXAIR - LINDE FACILITYMAGNA, UTAH MT3DMS - SIMULATED TPH CONCENTRATIONS AT 5, 10, 15, 20, 25, AND 30 YEARS FIGURE 7 LEGEND: APPROXIMATE UST LOCATION APPROXIMATE MONITORING WELL LOCATION SIMULATED TPH ISOCONCENTRATION CONTOURS (mg/L) 500 Penn Center Boulevard, Suite 1000 Pittsburgh, Pennsylvania 15235 10 NOTES: 1. SITE FEATURES AND MONITORING WELL LOCATIONS ARE APPROXIMATE. 2. TPH= TOTAL PETROLEUM HYDROCARBONS. 5 YEARS 10 YEARS 15 YEARS 20 YEARS 25 YEARS 30 YEARS Appendix A Groundwater Laboratory Analytical Report #=CL# April 20, 2021 LIMS USE: FR - PAUL BAUER LIMS OBJECT ID: 30413371 30413371 Project: Pace Project No.: RE: Paul Bauer APTIM 500 Penn Center Blvd. Suite 1000 Pittsburgh, PA 15235 Prax Air Magna Utah Dear Paul Bauer: Enclosed are the analytical results for sample(s) received by the laboratory on April 02, 2021. The results relate only to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report. The test results provided in this final report were generated by each of the following laboratories within the Pace Network: • Pace Analytical Services - Greensburg If you have any questions concerning this report, please feel free to contact me. Sincerely, Megan A. Rager megan.rager@pacelabs.com Project Manager (724)850-5600 Enclosures REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 1 of 23 #=CP# CERTIFICATIONS Pace Project No.: Project: 30413371 Prax Air Magna Utah Pace Analytical Services Pennsylvania 1638 Roseytown Rd Suites 2,3&4, Greensburg, PA 15601 ANAB DOD-ELAP Rad Accreditation #: L2417 Alabama Certification #: 41590 Arizona Certification #: AZ0734 Arkansas Certification California Certification #: 04222CA Colorado Certification #: PA01547 Connecticut Certification #: PH-0694 Delaware Certification EPA Region 4 DW Rad Florida/TNI Certification #: E87683 Georgia Certification #: C040 Guam Certification Florida: Cert E871149 SEKS WET Hawaii Certification Idaho Certification Illinois Certification Indiana Certification Iowa Certification #: 391 Kansas/TNI Certification #: E-10358 Kentucky Certification #: KY90133 KY WW Permit #: KY0098221 KY WW Permit #: KY0000221 Louisiana DHH/TNI Certification #: LA180012 Louisiana DEQ/TNI Certification #: 4086 Maine Certification #: 2017020 Maryland Certification #: 308 Massachusetts Certification #: M-PA1457 Michigan/PADEP Certification #: 9991 Missouri Certification #: 235 Montana Certification #: Cert0082 Nebraska Certification #: NE-OS-29-14 Nevada Certification #: PA014572018-1 New Hampshire/TNI Certification #: 297617 New Jersey/TNI Certification #: PA051 New Mexico Certification #: PA01457 New York/TNI Certification #: 10888 North Carolina Certification #: 42706 North Dakota Certification #: R-190 Ohio EPA Rad Approval: #41249 Oregon/TNI Certification #: PA200002-010 Pennsylvania/TNI Certification #: 65-00282 Puerto Rico Certification #: PA01457 Rhode Island Certification #: 65-00282 South Dakota Certification Tennessee Certification #: 02867 Texas/TNI Certification #: T104704188-17-3 Utah/TNI Certification #: PA014572017-9 USDA Soil Permit #: P330-17-00091 Vermont Dept. of Health: ID# VT-0282 Virgin Island/PADEP Certification Virginia/VELAP Certification #: 9526 Washington Certification #: C868 West Virginia DEP Certification #: 143 West Virginia DHHR Certification #: 9964C Wisconsin Approve List for Rad Wyoming Certification #: 8TMS-L REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 2 of 23 #=SS# SAMPLE SUMMARY Pace Project No.: Project: 30413371 Prax Air Magna Utah Lab ID Sample ID Matrix Date Collected Date Received 30413371001 NES 1366 Water 03/31/21 10:10 04/02/21 10:00 30413371002 CTC B25W-R Water 03/31/21 11:30 04/02/21 10:00 30413371003 CTC B21W Water 03/31/21 12:15 04/02/21 10:00 30413371004 NES 1363 Water 03/31/21 01:00 04/02/21 10:00 30413371005 Trench Water 03/31/21 01:15 04/02/21 10:00 30413371006 NES 1364 Water 03/31/21 02:00 04/02/21 10:00 30413371007 DUP-1 Water 03/31/21 02:00 04/02/21 10:00 30413371008 CTC B14W Water 03/31/21 05:15 04/02/21 10:00 30413371009 TRIP BLANK Water 03/31/21 00:00 04/02/21 10:00 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 3 of 23 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 30413371 Prax Air Magna Utah Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 30413371001 NES 1366 EPA 8015D 2 PASI-PASEL EPA 8260B 9 PASI-PALEL 30413371002 CTC B25W-R EPA 8015D 2 PASI-PASEL EPA 8260B 9 PASI-PALEL 30413371003 CTC B21W EPA 8015D 2 PASI-PASEL EPA 8260B 9 PASI-PALEL 30413371004 NES 1363 EPA 8015D 2 PASI-PASEL EPA 8260B 9 PASI-PALEL 30413371005 Trench EPA 8015D 2 PASI-PASEL EPA 8260B 9 PASI-PALEL 30413371006 NES 1364 EPA 8015D 2 PASI-PASEL EPA 8260B 9 PASI-PALEL 30413371007 DUP-1 EPA 8015D 2 PASI-PASEL EPA 8260B 9 PASI-PALEL 30413371008 CTC B14W EPA 8015D 2 PASI-PASEL EPA 8260B 9 PASI-PALEL 30413371009 TRIP BLANK EPA 8260B 9 PASI-PALEL PASI-PA = Pace Analytical Services - Greensburg REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 4 of 23 #=NA# PROJECT NARRATIVE Project: 30413371 Prax Air Magna Utah Date:April 20, 2021 Pace Project No.: CTC B25W-R (Lab ID: 30413371002) • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 7. CTC B21W (Lab ID: 30413371003) • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 6. Trench (Lab ID: 30413371005) • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 3. NES 1364 (Lab ID: 30413371006) • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 4. DUP-1 (Lab ID: 30413371007) • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 3. CTC B14W (Lab ID: 30413371008) • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 4. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 5 of 23 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 30413371 Prax Air Magna Utah Method: Client:APTIM EPA 8015D Date:April 20, 2021 Description:8015D TPH Reduced Volume General Information: 8 samples were analyzed for EPA 8015D by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with EPA 3510C with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. QC Batch: 442124 S4: Surrogate recovery not evaluated against control limits due to sample dilution. • CTC B25W-R (Lab ID: 30413371002) • o-Terphenyl (S) ST: Surrogate recovery was above laboratory control limits. Results may be biased high. • Trench (Lab ID: 30413371005) • o-Terphenyl (S) Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. A matrix spike/matrix spike duplicate was not performed due to insufficient sample volume. QC Batch: 442124 Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 6 of 23 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 30413371 Prax Air Magna Utah Method: Client:APTIM EPA 8015D Date:April 20, 2021 Description:8015D TPH Reduced Volume Analyte Comments: QC Batch: 442124 1c: A matrix spike/matrix spike duplicate was not performed for this batch due to insufficient sample volume. • CTC B14W (Lab ID: 30413371008) • TPH (C10-C28) • CTC B21W (Lab ID: 30413371003) • TPH (C10-C28) • CTC B25W-R (Lab ID: 30413371002) • TPH (C10-C28) • DUP-1 (Lab ID: 30413371007) • TPH (C10-C28) • NES 1363 (Lab ID: 30413371004) • TPH (C10-C28) • NES 1364 (Lab ID: 30413371006) • TPH (C10-C28) • NES 1366 (Lab ID: 30413371001) • TPH (C10-C28) • Trench (Lab ID: 30413371005) • TPH (C10-C28) 2c: Emulsions were present during the extraction of this sample. Appropriate mechanical means were employed to break up the emulsions and were successful. • CTC B21W (Lab ID: 30413371003) • TPH (C10-C28) REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 7 of 23 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 30413371 Prax Air Magna Utah Method: Client:APTIM EPA 8260B Date:April 20, 2021 Description:8260B MSV General Information: 9 samples were analyzed for EPA 8260B by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Internal Standards: All internal standards were within QC limits with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: This data package has been reviewed for quality and completeness and is approved for release. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 8 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: NES 1366 Lab ID: 30413371001 Collected: 03/31/21 10:10 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3510C Pace Analytical Services - Greensburg 8015D TPH Reduced Volume TPH (C10-C28)0.21 mg/L 04/16/21 13:21 1c04/07/21 10:400.099 1 Surrogates o-Terphenyl (S)62 %.04/16/21 13:21 84-15-104/07/21 10:4025-105 1 Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 17:28 71-43-21.0 1 Ethylbenzene ND ug/L 04/07/21 17:28 100-41-41.0 1 Naphthalene ND ug/L 04/07/21 17:28 91-20-32.0 1 Toluene ND ug/L 04/07/21 17:28 108-88-31.0 1 Xylene (Total)ND ug/L 04/07/21 17:28 1330-20-73.0 1 Surrogates Toluene-d8 (S)94 %.04/07/21 17:28 2037-26-570-130 1 4-Bromofluorobenzene (S)98 %.04/07/21 17:28 460-00-470-130 1 1,2-Dichloroethane-d4 (S)91 %.04/07/21 17:28 17060-07-070-130 1 Dibromofluoromethane (S)100 %.04/07/21 17:28 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 9 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: CTC B25W-R Lab ID: 30413371002 Collected: 03/31/21 11:30 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 7.Comments: Analytical Method: EPA 8015D Preparation Method: EPA 3510C Pace Analytical Services - Greensburg 8015D TPH Reduced Volume TPH (C10-C28)25.9 mg/L 04/16/21 13:44 1c04/07/21 10:402.0 20 Surrogates o-Terphenyl (S)0 %.04/16/21 13:44 84-15-1 S404/07/21 10:4025-105 20 Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 17:53 71-43-21.0 1 Ethylbenzene 67.1 ug/L 04/07/21 17:53 100-41-41.0 1 Naphthalene 6.7 ug/L 04/07/21 17:53 91-20-32.0 1 Toluene ND ug/L 04/07/21 17:53 108-88-31.0 1 Xylene (Total)9.8 ug/L 04/07/21 17:53 1330-20-73.0 1 Surrogates Toluene-d8 (S)95 %.04/07/21 17:53 2037-26-570-130 1 4-Bromofluorobenzene (S)100 %.04/07/21 17:53 460-00-470-130 1 1,2-Dichloroethane-d4 (S)89 %.04/07/21 17:53 17060-07-070-130 1 Dibromofluoromethane (S)97 %.04/07/21 17:53 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 10 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: CTC B21W Lab ID: 30413371003 Collected: 03/31/21 12:15 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 6.Comments: Analytical Method: EPA 8015D Preparation Method: EPA 3510C Pace Analytical Services - Greensburg 8015D TPH Reduced Volume TPH (C10-C28)5.8 mg/L 04/15/21 17:17 1c,2c04/07/21 10:400.99 10 Surrogates o-Terphenyl (S)46 %.04/15/21 17:17 84-15-104/07/21 10:4025-105 10 Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 18:19 71-43-21.0 1 Ethylbenzene ND ug/L 04/07/21 18:19 100-41-41.0 1 Naphthalene ND ug/L 04/07/21 18:19 91-20-32.0 1 Toluene ND ug/L 04/07/21 18:19 108-88-31.0 1 Xylene (Total)ND ug/L 04/07/21 18:19 1330-20-73.0 1 Surrogates Toluene-d8 (S)95 %.04/07/21 18:19 2037-26-570-130 1 4-Bromofluorobenzene (S)98 %.04/07/21 18:19 460-00-470-130 1 1,2-Dichloroethane-d4 (S)89 %.04/07/21 18:19 17060-07-070-130 1 Dibromofluoromethane (S)96 %.04/07/21 18:19 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 11 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: NES 1363 Lab ID: 30413371004 Collected: 03/31/21 01:00 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3510C Pace Analytical Services - Greensburg 8015D TPH Reduced Volume TPH (C10-C28)3.0 mg/L 04/15/21 18:04 1c04/07/21 10:401.2 10 Surrogates o-Terphenyl (S)56 %.04/15/21 18:04 84-15-104/07/21 10:4025-105 10 Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 18:45 71-43-21.0 1 Ethylbenzene ND ug/L 04/07/21 18:45 100-41-41.0 1 Naphthalene ND ug/L 04/07/21 18:45 91-20-32.0 1 Toluene ND ug/L 04/07/21 18:45 108-88-31.0 1 Xylene (Total)ND ug/L 04/07/21 18:45 1330-20-73.0 1 Surrogates Toluene-d8 (S)96 %.04/07/21 18:45 2037-26-570-130 1 4-Bromofluorobenzene (S)100 %.04/07/21 18:45 460-00-470-130 1 1,2-Dichloroethane-d4 (S)95 %.04/07/21 18:45 17060-07-070-130 1 Dibromofluoromethane (S)102 %.04/07/21 18:45 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 12 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: Trench Lab ID: 30413371005 Collected: 03/31/21 01:15 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 3.Comments: Analytical Method: EPA 8015D Preparation Method: EPA 3510C Pace Analytical Services - Greensburg 8015D TPH Reduced Volume TPH (C10-C28)1.7 mg/L 04/16/21 14:08 1c04/07/21 10:400.49 5 Surrogates o-Terphenyl (S)163 %.04/16/21 14:08 84-15-1 ST04/07/21 10:4025-105 5 Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 19:10 71-43-21.0 1 Ethylbenzene ND ug/L 04/07/21 19:10 100-41-41.0 1 Naphthalene ND ug/L 04/07/21 19:10 91-20-32.0 1 Toluene ND ug/L 04/07/21 19:10 108-88-31.0 1 Xylene (Total)ND ug/L 04/07/21 19:10 1330-20-73.0 1 Surrogates Toluene-d8 (S)95 %.04/07/21 19:10 2037-26-570-130 1 4-Bromofluorobenzene (S)101 %.04/07/21 19:10 460-00-470-130 1 1,2-Dichloroethane-d4 (S)87 %.04/07/21 19:10 17060-07-070-130 1 Dibromofluoromethane (S)95 %.04/07/21 19:10 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 13 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: NES 1364 Lab ID: 30413371006 Collected: 03/31/21 02:00 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 4.Comments: Analytical Method: EPA 8015D Preparation Method: EPA 3510C Pace Analytical Services - Greensburg 8015D TPH Reduced Volume TPH (C10-C28)2.6 mg/L 04/15/21 18:51 1c04/07/21 10:400.53 5 Surrogates o-Terphenyl (S)58 %.04/15/21 18:51 84-15-104/07/21 10:4025-105 5 Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 19:36 71-43-21.0 1 Ethylbenzene ND ug/L 04/07/21 19:36 100-41-41.0 1 Naphthalene ND ug/L 04/07/21 19:36 91-20-32.0 1 Toluene ND ug/L 04/07/21 19:36 108-88-31.0 1 Xylene (Total)ND ug/L 04/07/21 19:36 1330-20-73.0 1 Surrogates Toluene-d8 (S)97 %.04/07/21 19:36 2037-26-570-130 1 4-Bromofluorobenzene (S)97 %.04/07/21 19:36 460-00-470-130 1 1,2-Dichloroethane-d4 (S)92 %.04/07/21 19:36 17060-07-070-130 1 Dibromofluoromethane (S)101 %.04/07/21 19:36 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 14 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: DUP-1 Lab ID: 30413371007 Collected: 03/31/21 02:00 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 3.Comments: Analytical Method: EPA 8015D Preparation Method: EPA 3510C Pace Analytical Services - Greensburg 8015D TPH Reduced Volume TPH (C10-C28)1.5 mg/L 04/15/21 19:38 1c04/07/21 10:400.52 5 Surrogates o-Terphenyl (S)60 %.04/15/21 19:38 84-15-104/07/21 10:4025-105 5 Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 20:02 71-43-21.0 1 Ethylbenzene ND ug/L 04/07/21 20:02 100-41-41.0 1 Naphthalene ND ug/L 04/07/21 20:02 91-20-32.0 1 Toluene ND ug/L 04/07/21 20:02 108-88-31.0 1 Xylene (Total)ND ug/L 04/07/21 20:02 1330-20-73.0 1 Surrogates Toluene-d8 (S)95 %.04/07/21 20:02 2037-26-570-130 1 4-Bromofluorobenzene (S)100 %.04/07/21 20:02 460-00-470-130 1 1,2-Dichloroethane-d4 (S)92 %.04/07/21 20:02 17060-07-070-130 1 Dibromofluoromethane (S)102 %.04/07/21 20:02 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 15 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: CTC B14W Lab ID: 30413371008 Collected: 03/31/21 05:15 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit • Post-analysis pH measurement indicates pH > 2. The pH of the VOA vial used for analysis was 4.Comments: Analytical Method: EPA 8015D Preparation Method: EPA 3510C Pace Analytical Services - Greensburg 8015D TPH Reduced Volume TPH (C10-C28)1.1 mg/L 04/15/21 20:02 1c04/07/21 10:400.10 1 Surrogates o-Terphenyl (S)73 %.04/15/21 20:02 84-15-104/07/21 10:4025-105 1 Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 20:27 71-43-21.0 1 Ethylbenzene ND ug/L 04/07/21 20:27 100-41-41.0 1 Naphthalene ND ug/L 04/07/21 20:27 91-20-32.0 1 Toluene ND ug/L 04/07/21 20:27 108-88-31.0 1 Xylene (Total)ND ug/L 04/07/21 20:27 1330-20-73.0 1 Surrogates Toluene-d8 (S)96 %.04/07/21 20:27 2037-26-570-130 1 4-Bromofluorobenzene (S)99 %.04/07/21 20:27 460-00-470-130 1 1,2-Dichloroethane-d4 (S)90 %.04/07/21 20:27 17060-07-070-130 1 Dibromofluoromethane (S)101 %.04/07/21 20:27 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 16 of 23 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30413371 Prax Air Magna Utah Sample: TRIP BLANK Lab ID: 30413371009 Collected: 03/31/21 00:00 Received: 04/02/21 10:00 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 04/07/21 14:28 71-43-21.0 1 Ethylbenzene ND ug/L 04/07/21 14:28 100-41-41.0 1 Naphthalene ND ug/L 04/07/21 14:28 91-20-32.0 1 Toluene ND ug/L 04/07/21 14:28 108-88-31.0 1 Xylene (Total)ND ug/L 04/07/21 14:28 1330-20-73.0 1 Surrogates Toluene-d8 (S)98 %.04/07/21 14:28 2037-26-570-130 1 4-Bromofluorobenzene (S)97 %.04/07/21 14:28 460-00-470-130 1 1,2-Dichloroethane-d4 (S)86 %.04/07/21 14:28 17060-07-070-130 1 Dibromofluoromethane (S)97 %.04/07/21 14:28 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 17 of 23 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30413371 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 442212 EPA 8260B EPA 8260B 8260B MSV UST-WATER Laboratory:Pace Analytical Services - Greensburg Associated Lab Samples:30413371001, 30413371002, 30413371003, 30413371004, 30413371005, 30413371006, 30413371007, 30413371008, 30413371009 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 2134415 Associated Lab Samples: 30413371001, 30413371002, 30413371003, 30413371004, 30413371005, 30413371006, 30413371007, 30413371008, 30413371009 Matrix: Water Analyzed Benzene ug/L ND 1.0 04/07/21 13:37 Ethylbenzene ug/L ND 1.0 04/07/21 13:37 Naphthalene ug/L ND 2.0 04/07/21 13:37 Toluene ug/L ND 1.0 04/07/21 13:37 Xylene (Total)ug/L ND 3.0 04/07/21 13:37 1,2-Dichloroethane-d4 (S)%.90 70-130 04/07/21 13:37 4-Bromofluorobenzene (S)%.99 70-130 04/07/21 13:37 Dibromofluoromethane (S)%.100 70-130 04/07/21 13:37 Toluene-d8 (S)%.94 70-130 04/07/21 13:37 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2134416LABORATORY CONTROL SAMPLE: LCSSpike Benzene ug/L 19.820 99 70-130 Ethylbenzene ug/L 21.520 108 70-130 Naphthalene ug/L 21.220 106 55-160 Toluene ug/L 19.720 98 70-130 Xylene (Total)ug/L 62.460 104 70-130 1,2-Dichloroethane-d4 (S)%.87 70-130 4-Bromofluorobenzene (S)%.101 70-130 Dibromofluoromethane (S)%.102 70-130 Toluene-d8 (S)%.98 70-130 Parameter Units MS Result % Rec Limits Qual% RecConc. 2134417MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 30413968001 2134418 MSD Result MSD % Rec RPD RPD Max MSDMS Spike Conc. Benzene ug/L 20 81 50-14979 3 3020ND16.2 15.8 Ethylbenzene ug/L 20 85 63-13586 2 3020ND17.0 17.3 Naphthalene ug/L 20 77 30-15777 0 3020ND15.4 15.4 Toluene ug/L 20 80 59-13982 2 3020ND16.0 16.4 Xylene (Total)ug/L 60 83 63-13585 2 3060ND49.9 50.7 1,2-Dichloroethane-d4 (S) %.91 70-13085 4-Bromofluorobenzene (S) %.99 70-130100 Dibromofluoromethane (S) %.103 70-13094 Toluene-d8 (S)%.95 70-13099 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 18 of 23 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30413371 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 442124 EPA 3510C EPA 8015D EPA 8015D TPH RV Laboratory:Pace Analytical Services - Greensburg Associated Lab Samples:30413371001, 30413371002, 30413371003, 30413371004, 30413371005, 30413371006, 30413371007, 30413371008 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 2134012 Associated Lab Samples: 30413371001, 30413371002, 30413371003, 30413371004, 30413371005, 30413371006, 30413371007, 30413371008 Matrix: Water Analyzed TPH (C10-C28)mg/L ND 0.10 04/14/21 00:43 o-Terphenyl (S)%.101 25-105 04/14/21 00:43 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2134013LABORATORY CONTROL SAMPLE: LCSSpike TPH (C10-C28)mg/L 0.801 80 46-110 o-Terphenyl (S)%.83 25-105 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 19 of 23 #=QL# QUALIFIERS Pace Project No.: Project: 30413371 Prax Air Magna Utah DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot. ND - Not Detected at or above adjusted reporting limit. TNTC - Too Numerous To Count J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL - Adjusted Method Detection Limit. PQL - Practical Quantitation Limit. RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and bias for a specific analyte in a specific matrix. S - Surrogate 1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is a combined concentration. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) DUP - Sample Duplicate RPD - Relative Percent Difference NC - Not Calculable. SG - Silica Gel - Clean-Up U - Indicates the compound was analyzed for, but not detected. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for each analyte is a combined concentration. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TNI - The NELAC Institute. BATCH QUALIFIERS Batch: 442124 A matrix spike/matrix spike duplicate was not performed for this batch due to insufficient sample volume.[M5] ANALYTE QUALIFIERS A matrix spike/matrix spike duplicate was not performed for this batch due to insufficient sample volume.1c Emulsions were present during the extraction of this sample. Appropriate mechanical means were employed to break up the emulsions and were successful.2c Surrogate recovery not evaluated against control limits due to sample dilution.S4 Surrogate recovery was above laboratory control limits. Results may be biased high.ST REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 20 of 23 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 30413371 Prax Air Magna Utah Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 30413371001 442124 442315NES 1366 EPA 3510C EPA 8015D 30413371002 442124 442315CTC B25W-R EPA 3510C EPA 8015D 30413371003 442124 442315CTC B21W EPA 3510C EPA 8015D 30413371004 442124 442315NES 1363 EPA 3510C EPA 8015D 30413371005 442124 442315TrenchEPA 3510C EPA 8015D 30413371006 442124 442315NES 1364 EPA 3510C EPA 8015D 30413371007 442124 442315DUP-1 EPA 3510C EPA 8015D 30413371008 442124 442315CTC B14W EPA 3510C EPA 8015D 30413371001 442212NES 1366 EPA 8260B 30413371002 442212CTC B25W-R EPA 8260B 30413371003 442212CTC B21W EPA 8260B 30413371004 442212NES 1363 EPA 8260B 30413371005 442212TrenchEPA 8260B 30413371006 442212NES 1364 EPA 8260B 30413371007 442212DUP-1 EPA 8260B 30413371008 442212CTC B14W EPA 8260B 30413371009 442212TRIP BLANK EPA 8260B REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 04/20/2021 10:02 AM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 21 of 23 Page 22 of 23 Page 23 of 23 Appendix B Boring Logs 100% BH1 @ 5-7 100% BH1 @ 7-8 100% 0.2 0.2 0.7 0.8 SM ASPHALT Light brown, SAND, and gravel, dry. Brown to gray, silty SAND, and gravel, dry. Refusal 9 feet bgs J. SandavalDriller NA ft. NA ft. Method Type/Size Water Level Initial Checked By License No. Date - Hand cleared to 5' below ground surface (bgs) - Four (4) Borings were attempted at this location, shallow refusal at all four loactions. - Soil sample collected from: BH 1 - 5-7 feet bgs BH 1 - 7-8 feet bgs Length Surface Elev.East NA Geoprobe 7822 DT C. Reed NA ft. COMMENTS Type Screen: Dia North P. Bauer NA Diameter Drill Co. Fill Material Direct Push Length NA in. NA in. 2 in. Casing: Dia Rig/CoreBentonite Direct Push Services, LLC. Top of Casing Log By Total Hole Depth Static Permit # 9.0 ft. NA 11/11/20 40.7269544 ft. -112.1878517 ft. NA/NA in. NA NA (Color, Texture, Structure) Geologic Descriptions are Based on the USCS.Sa m p l e I D % R e c o v e r y Description PI D (p p m ) Gr a p h i c Lo g US C S C l a s s . De p t h (f t . ) Re c o v e r y Bl o w C o u n t o r RQ D Magna, UT Praxair Magna FacilityProject Proj. No. BH 1 631003879Location Drilling Log Soil Boring 0 2 4 6 8 10 12 14 16 18 20 Owner Praxair Page: 1 of 1 AP T I M R e v : 7 / 1 3 / 1 7 P R A X A I R - M A G N A _ 2 0 2 0 . G P J I T _ C O R P . G D T 1 1 / 2 0 / 2 0 100% BH2 @ 5-7 100% 100% BH2 @ 10-12 100% 100% BH2 @ 15-17 100% 0.2 0.4 0.4 0.4 1.9 1.2 1.2 SM CLML SM CLML ASPHALT Light gray, clayey SAND, and gravel, dry. Light grayish brown, silty SAND, and gravel. Light brown, silty CLAY, some gravel, dry. Light brown, silty SAND, and gravel, damp. Dark brown, silty CLAY, some gravel, moist to very moist. SAA, wet. Bottom of boring 17 feet bgs J. SandavalDriller NA ft. NA ft. Method Type/Size Water Level Initial Checked By License No. Date - Hand cleared to 5' below ground surface (bgs) - SAA - Same as Above - Soil sample collected from: BH 2 - 5-7 feet bgs BH 2 - 10-12 feet bgs BH 2 - 15-17 feet bgs Length Surface Elev.East NA Geoprobe 7822 DT C. Reed NA ft. COMMENTS Type Screen: Dia North P. Bauer NA Diameter Drill Co. Fill Material Direct Push Length NA in. NA in. 2 in. Casing: Dia Rig/CoreBentonite Direct Push Services, LLC. Top of Casing Log By Total Hole Depth Static Permit # 17.0 ft. NA 11/11/20 40.72690944 ft. -112.1877625 ft. NA/NA in. NA NA (Color, Texture, Structure) Geologic Descriptions are Based on the USCS.Sa m p l e I D % R e c o v e r y Description PI D (p p m ) Gr a p h i c Lo g US C S C l a s s . De p t h (f t . ) Re c o v e r y Bl o w C o u n t o r RQ D Magna, UT Praxair Magna FacilityProject Proj. No. BH 2 631003879Location Drilling Log Soil Boring 0 2 4 6 8 10 12 14 16 18 20 Owner Praxair Page: 1 of 1 AP T I M R e v : 7 / 1 3 / 1 7 P R A X A I R - M A G N A _ 2 0 2 0 . G P J I T _ C O R P . G D T 1 1 / 2 0 / 2 0 100% BH3 @ 5-7 100% 100% BH3 @ 10-12 100% 100% BH3 @ 15-17 100% 1.1 1.3 4.6 2.6 3.6 2.4 5.2 CLML CL SW GW ASPHALT Light gray, fine SAND, some gravel, dry. Grayish brown, sandy CLAY, some gravel, dry. Light gray brown, silty CLAY, dry. SAA, few gravel, dry. Brownish gray, sandy CLAY, some gravel, dry. SAA, light gray. Yellowish brown, fine SAND, and gravel, dry to damp. SAA, moist. Light brown, SAND and GRAVEL, wet. Bottom of boring 17 feet bgs J. SandavalDriller NA ft. NA ft. Method Type/Size Water Level Initial Checked By License No. Date - Hand cleared to 5' below ground surface (bgs) - SAA - Same as Above - Soil sample collected from: BH 3 - 5-7 feet bgs BH 3 - 10-12 feet bgs BH 3 - 15-17 feet bgs Length Surface Elev.East NA Geoprobe 7822 DT C. Reed NA ft. COMMENTS Type Screen: Dia North P. Bauer NA Diameter Drill Co. Fill Material Direct Push Length NA in. NA in. 2 in. Casing: Dia Rig/CoreBentonite Direct Push Services, LLC. Top of Casing Log By Total Hole Depth Static Permit # 17.0 ft. NA 11/11/20 40.72684694 ft. -112.1877736 ft. NA/NA in. NA NA (Color, Texture, Structure) Geologic Descriptions are Based on the USCS.Sa m p l e I D % R e c o v e r y Description PI D (p p m ) Gr a p h i c Lo g US C S C l a s s . De p t h (f t . ) Re c o v e r y Bl o w C o u n t o r RQ D Magna, UT Praxair Magna FacilityProject Proj. No. BH 3 631003879Location Drilling Log Soil Boring 0 2 4 6 8 10 12 14 16 18 20 Owner Praxair Page: 1 of 1 AP T I M R e v : 7 / 1 3 / 1 7 P R A X A I R - M A G N A _ 2 0 2 0 . G P J I T _ C O R P . G D T 1 1 / 2 0 / 2 0 100% BH4 @ 5-7 100% 100% BH4 @ 10-12 100% 100% BH4 @ 15-17 100% 2.2 3.5 5.3 3.2 4.2 3.5 3.3 SM SWG SW CL GW ASPHALT Dark brown, sandy CLAY, dry. Light brown, silty SAND, some gravel, dry. Dark brown, silty SAND, dry. SAA, reddish brown, few gravel, dry. Brownish gray, gravelly SAND, dry. Light brown, fine SAND, and gravel, dry to damp. Brown, CLAY, some gravel, damp to moist. Light Brown, SAND and GRAVEL, very moist to wet. Bottom of boring 17 feet bgs J. SandavalDriller NA ft. NA ft. Method Type/Size Water Level Initial Checked By License No. Date - Hand cleared to 5' below ground surface (bgs) - SAA - Same as Above - Soil sample collected from: BH 4 - 5-7 feet bgs BH 4 - 10-12 feet bgs BH 4 - 15-17 feet bgs Length Surface Elev.East NA Geoprobe 7822 DT C. Reed NA ft. COMMENTS Type Screen: Dia North P. Bauer NA Diameter Drill Co. Fill Material Direct Push Length NA in. NA in. 2 in. Casing: Dia Rig/CoreBentonite Direct Push Services, LLC. Top of Casing Log By Total Hole Depth Static Permit # 17.0 ft. NA 11/11/20 40.72684389 ft. -112.1878694 ft. NA/NA in. NA NA (Color, Texture, Structure) Geologic Descriptions are Based on the USCS.Sa m p l e I D % R e c o v e r y Description PI D (p p m ) Gr a p h i c Lo g US C S C l a s s . De p t h (f t . ) Re c o v e r y Bl o w C o u n t o r RQ D Magna, UT Praxair Magna FacilityProject Proj. No. BH 4 631003879Location Drilling Log Soil Boring 0 2 4 6 8 10 12 14 16 18 20 Owner Praxair Page: 1 of 1 AP T I M R e v : 7 / 1 3 / 1 7 P R A X A I R - M A G N A _ 2 0 2 0 . G P J I T _ C O R P . G D T 1 1 / 2 0 / 2 0 100% 100% 100% BH5 @ 10-12 100% BH5 @ 13-15 100% BH5 @ 15-17 100% 0.9 1.6 1.9 1.1 3.0 139.2 54.4 CLML SWG SW ASPHALT Light gray, fine SAND, some gravel, dry. Light brown, silty CLAY, dry. Light gray, gravelly SAND, dry. Light brown, fine SAND, and gravel, dry. SAA, yellowish brown, damp. SAA, gray, wet Bottom of boring 17 feet bgs J. SandavalDriller NA ft. NA ft. Method Type/Size Water Level Initial Checked By License No. Date - Hand cleared to 5' below ground surface (bgs) - SAA - Same as Above - Soil sample collected from: BH 5 - 10-12 feet bgs BH 5 - 13-15 feet bgs BH 5 - 15-17 feet bgs Length Surface Elev.East NA Geoprobe 7822 DT C. Reed NA ft. COMMENTS Type Screen: Dia North P. Bauer NA Diameter Drill Co. Fill Material Direct Push Length NA in. NA in. 2 in. Casing: Dia Rig/CoreBentonite Direct Push Services, LLC. Top of Casing Log By Total Hole Depth Static Permit # 17.0 ft. NA 11/12/20 40.72677361 ft. -112.1878569 ft. NA/NA in. NA NA (Color, Texture, Structure) Geologic Descriptions are Based on the USCS.Sa m p l e I D % R e c o v e r y Description PI D (p p m ) Gr a p h i c Lo g US C S C l a s s . De p t h (f t . ) Re c o v e r y Bl o w C o u n t o r RQ D Magna, UT Praxair Magna FacilityProject Proj. No. BH 5 631003879Location Drilling Log Soil Boring 0 2 4 6 8 10 12 14 16 18 20 Owner Praxair Page: 1 of 1 AP T I M R e v : 7 / 1 3 / 1 7 P R A X A I R - M A G N A _ 2 0 2 0 . G P J I T _ C O R P . G D T 1 1 / 2 0 / 2 0 100% BH6 @ 5-7 100% 100% BH6 @ 10-12 100% 100% BH6 @ 15-17 100% 2.2 1.2 3.5 0.8 1.9 1.3 24 CLML SM SW SM SW ASPHALT Light gray, course SAND, and gravel, dry. Light brown, silty CLAY,and gravel, dry. Light brown, silty CLAY, and gravel, dry. Light gray, silty SAND, and gravel, dry. SAA, light brown. Light brown, fine SAND, and gravel, dry. SAA, damp. SAA, damp to moist. Light brown, silty SAND, and gravel, very moist. Brown, fine SAND, some silt, and gravel, wet. Bottom of boring 17 feet bgs J. SandavalDriller NA ft. NA ft. Method Type/Size Water Level Initial Checked By License No. Date - Hand cleared to 5' below ground surface (bgs) - SAA - Same as Above - Soil sample collected from: BH 6 - 5-7 feet bgs BH 6 - 10-12 feet bgs BH 6 - 15-17 feet bgs Length Surface Elev.East NA Geoprobe 7822 DT C. Reed NA ft. COMMENTS Type Screen: Dia North P. Bauer NA Diameter Drill Co. Fill Material Direct Push Length NA in. NA in. 2 in. Casing: Dia Rig/CoreBentonite Direct Push Services, LLC. Top of Casing Log By Total Hole Depth Static Permit # 17.0 ft. NA 11/12/20 40.72673111 ft. -112.1878142 ft. NA/NA in. NA NA (Color, Texture, Structure) Geologic Descriptions are Based on the USCS.Sa m p l e I D % R e c o v e r y Description PI D (p p m ) Gr a p h i c Lo g US C S C l a s s . De p t h (f t . ) Re c o v e r y Bl o w C o u n t o r RQ D Magna, UT Praxair Magna FacilityProject Proj. No. BH 6 631003879Location Drilling Log Soil Boring 0 2 4 6 8 10 12 14 16 18 20 Owner Praxair Page: 1 of 1 AP T I M R e v : 7 / 1 3 / 1 7 P R A X A I R - M A G N A _ 2 0 2 0 . G P J I T _ C O R P . G D T 1 1 / 2 0 / 2 0 100% BH7 @ 5-7 100% 100% BH7 @ 10-12 100% 100% BH7 @ 15-17 100% 2.2 2.2 4.3 2.7 1.9 0.8 2.1 CLML SWSM SM SW SM ASPHALT Light gray, course SAND and SILT, trace interbedded gravel, dry. Light brown, silty CLAY, dry. SAA, brown, some gravel, dry. Brown, SAND and SILT, few gravel, dry. Brown, silty SAND, and gravel, dry. Brown, fine SAND, and gravel, damp. SAA, damp to moist. Light brown, silty SAND, and gravel, very moist to wet. Bottom of boring 17 feet bgs J. SandavalDriller NA ft. NA ft. Method Type/Size Water Level Initial Checked By License No. Date - Hand cleared to 5' below ground surface (bgs) - SAA - Same as Above - Soil sample collected from: BH 7 - 5-7 feet bgs BH 7 - 10-12 feet bgs BH 7 - 15-17 feet bgs Length Surface Elev.East NA Geoprobe 7822 DT C. Reed NA ft. COMMENTS Type Screen: Dia North P. Bauer NA Diameter Drill Co. Fill Material Direct Push Length NA in. NA in. 2 in. Casing: Dia Rig/CoreBentonite Direct Push Services, LLC. Top of Casing Log By Total Hole Depth Static Permit # 17.0 ft. NA 11/12/20 40.72670111 ft. -112.1877292 ft. NA/NA in. NA NA (Color, Texture, Structure) Geologic Descriptions are Based on the USCS.Sa m p l e I D % R e c o v e r y Description PI D (p p m ) Gr a p h i c Lo g US C S C l a s s . De p t h (f t . ) Re c o v e r y Bl o w C o u n t o r RQ D Magna, UT Praxair Magna FacilityProject Proj. No. BH 7 631003879Location Drilling Log Soil Boring 0 2 4 6 8 10 12 14 16 18 20 Owner Praxair Page: 1 of 1 AP T I M R e v : 7 / 1 3 / 1 7 P R A X A I R - M A G N A _ 2 0 2 0 . G P J I T _ C O R P . G D T 1 1 / 2 0 / 2 0 100% BH8 @ 5-7 100% 100% BH8 @ 10-12 100% 100% BH8 @ 15-17 100% 3.1 5.3 6.4 4.3 4.4 3.5 7.5 SWSM SW ML SP SM ASPHALT Light brown, course SAND, and gravel, dry. Light brown, SAND and SILT, trace gravel, dry. Brown, course SAND, and gravel, dry. Brown, SILT, trace fine gravel, damp. Brown, SAND, and gravel, damp to moist. Light brown, silty SAND, and gravel, very moist to wet. Bottom of boring 17 feet bgs J. SandavalDriller NA ft. NA ft. Method Type/Size Water Level Initial Checked By License No. Date - Hand cleared to 5' below ground surface (bgs) - Soil sample collected from: BH 8 - 5-7 feet bgs BH 8 - 10-12 feet bgs BH 8 - 15-17 feet bgsLength Surface Elev.East NA Geoprobe 7822 DT C. Reed NA ft. COMMENTS Type Screen: Dia North P. Bauer NA Diameter Drill Co. Fill Material Direct Push Length NA in. NA in. 2 in. Casing: Dia Rig/CoreBentonite Direct Push Services, LLC. Top of Casing Log By Total Hole Depth Static Permit # 17.0 ft. NA 11/12/20 40.72653056 ft. -112.1878361 ft. NA/NA in. NA NA (Color, Texture, Structure) Geologic Descriptions are Based on the USCS.Sa m p l e I D % R e c o v e r y Description PI D (p p m ) Gr a p h i c Lo g US C S C l a s s . De p t h (f t . ) Re c o v e r y Bl o w C o u n t o r RQ D Magna, UT Praxair Magna FacilityProject Proj. No. BH 8 631003879Location Drilling Log Soil Boring 0 2 4 6 8 10 12 14 16 18 20 Owner Praxair Page: 1 of 1 AP T I M R e v : 7 / 1 3 / 1 7 P R A X A I R - M A G N A _ 2 0 2 0 . G P J I T _ C O R P . G D T 1 1 / 2 0 / 2 0 Appendix C Soil Laboratory Analytical Report #=CL# November 25, 2020 LIMS USE: FR - PAUL BAUER LIMS OBJECT ID: 30392678 30392678 Project: Pace Project No.: RE: Paul Bauer APTIM 500 Penn Center Blvd. Suite 1000 Pittsburgh, PA 15235 Prax Air Magna Utah Dear Paul Bauer: Enclosed are the analytical results for sample(s) received by the laboratory on November 13, 2020. The results relate only to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report. The test results provided in this final report were generated by each of the following laboratories within the Pace Network: • Pace Analytical Services - Long Island • Pace Analytical Services - Greensburg If you have any questions concerning this report, please feel free to contact me. Sincerely, Megan A. Rager megan.rager@pacelabs.com Project Manager (724)850-5600 Enclosures REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 1 of 53 #=CP# CERTIFICATIONS Pace Project No.: Project: 30392678 Prax Air Magna Utah Pace Analytical Services Pennsylvania 1638 Roseytown Rd Suites 2,3&4, Greensburg, PA 15601 ANAB DOD-ELAP Rad Accreditation #: L2417 Alabama Certification #: 41590 Arizona Certification #: AZ0734 Arkansas Certification California Certification #: 04222CA Colorado Certification #: PA01547 Connecticut Certification #: PH-0694 Delaware Certification EPA Region 4 DW Rad Florida/TNI Certification #: E87683 Georgia Certification #: C040 Guam Certification Florida: Cert E871149 SEKS WET Hawaii Certification Idaho Certification Illinois Certification Indiana Certification Iowa Certification #: 391 Kansas/TNI Certification #: E-10358 Kentucky Certification #: KY90133 KY WW Permit #: KY0098221 KY WW Permit #: KY0000221 Louisiana DHH/TNI Certification #: LA180012 Louisiana DEQ/TNI Certification #: 4086 Maine Certification #: 2017020 Maryland Certification #: 308 Massachusetts Certification #: M-PA1457 Michigan/PADEP Certification #: 9991 Missouri Certification #: 235 Montana Certification #: Cert0082 Nebraska Certification #: NE-OS-29-14 Nevada Certification #: PA014572018-1 New Hampshire/TNI Certification #: 297617 New Jersey/TNI Certification #: PA051 New Mexico Certification #: PA01457 New York/TNI Certification #: 10888 North Carolina Certification #: 42706 North Dakota Certification #: R-190 Ohio EPA Rad Approval: #41249 Oregon/TNI Certification #: PA200002-010 Pennsylvania/TNI Certification #: 65-00282 Puerto Rico Certification #: PA01457 Rhode Island Certification #: 65-00282 South Dakota Certification Tennessee Certification #: 02867 Texas/TNI Certification #: T104704188-17-3 Utah/TNI Certification #: PA014572017-9 USDA Soil Permit #: P330-17-00091 Vermont Dept. of Health: ID# VT-0282 Virgin Island/PADEP Certification Virginia/VELAP Certification #: 9526 Washington Certification #: C868 West Virginia DEP Certification #: 143 West Virginia DHHR Certification #: 9964C Wisconsin Approve List for Rad Wyoming Certification #: 8TMS-L Pace Analytical Services Long Island 575 Broad Hollow Rd, Melville, NY 11747 New York Certification #: 10478 Primary Accrediting Body New Jersey Certification #: NY158 Pennsylvania Certification #: 68-00350 Connecticut Certification #: PH-0435 Maryland Certification #: 208 Rhode Island Certification #: LAO00340 Massachusetts Certification #: M-NY026 New Hampshire Certification #: 2987 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 2 of 53 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 30392678 Prax Air Magna Utah Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 30392678001 BH1@5-7 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678002 BH1@7-8 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678003 BH2@5-7 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678004 BH2@10-12 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678005 BH2@15-17 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678006 BH3@5-7 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678007 BH3@10-12 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678008 BH3@15-17 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678009 BH4@5-7 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678010 BH4@10-12 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678011 BH4@15-17 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678012 BH5@10-12 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678013 BH5@13-15 EPA 8015D 2 PASI-PASEL REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 3 of 53 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 30392678 Prax Air Magna Utah Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts EPA 8260C 8 PASI-MVBBL ASTM D2974-87 1 PASI-PANLD 30392678014 BH5@15-17 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PANLD 30392678015 BH6@5-7 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678016 BH6@10-12 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678017 BH6@15-17 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678018 BH7@5-7 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678019 BH7@10-12 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678020 BH7@15-17 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678021 BH8@5-7 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678022 BH8@10-12 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678023 BH8@15-17 EPA 8015D 2 PASI-PASEL EPA 8260C 8 PASI-MVKGG ASTM D2974-87 1 PASI-PAJMW 30392678024 Trip Blank EPA 8260B 9 PASI-PABEM PASI-MV = Pace Analytical Services - Long Island PASI-PA = Pace Analytical Services - Greensburg REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 4 of 53 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 30392678 Prax Air Magna Utah Method: Client:APTIM EPA 8015D Date:November 25, 2020 Description:8015D TPH Microwave General Information: 23 samples were analyzed for EPA 8015D by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with EPA 3546 with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. QC Batch: 423327 S4: Surrogate recovery not evaluated against control limits due to sample dilution. • BH5@13-15 (Lab ID: 30392678013) • o-Terphenyl (S) Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 5 of 53 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 30392678 Prax Air Magna Utah Method: Client:APTIM EPA 8260C Date:November 25, 2020 Description:8260C MSV 5035A-L Low Level General Information: 22 samples were analyzed for EPA 8260C by Pace Analytical Services Long Island. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with EPA 5035A-L with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Internal Standards: All internal standards were within QC limits with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. QC Batch: 186997 A matrix spike and/or matrix spike duplicate (MS/MSD) were performed on the following sample(s): 30392678023 M1: Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery. • MS (Lab ID: 917488) • Naphthalene R1: RPD value was outside control limits. • MSD (Lab ID: 917489) • Ethylbenzene Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 6 of 53 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 30392678 Prax Air Magna Utah Method: Client:APTIM EPA 8260C Date:November 25, 2020 Description:8260C MSV 5035A-L Low Level Analyte Comments: QC Batch: 186997 E: Analyte concentration exceeded the calibration range. The reported result is estimated. • MSD (Lab ID: 917489) • Naphthalene REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 7 of 53 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 30392678 Prax Air Magna Utah Method: Client:APTIM EPA 8260C Date:November 25, 2020 Description:8260 MSV 5035A-H Med Level General Information: 1 sample was analyzed for EPA 8260C by Pace Analytical Services Long Island. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Sample Preparation: The samples were prepared in accordance with EPA 5035A-H/5030C with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Internal Standards: All internal standards were within QC limits with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 8 of 53 #=NA# PROJECT NARRATIVE Pace Project No.: Project: 30392678 Prax Air Magna Utah Method: Client:APTIM EPA 8260B Date:November 25, 2020 Description:8260B MSV General Information: 1 sample was analyzed for EPA 8260B by Pace Analytical Services Greensburg. All samples were received in acceptable condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form (SCUR) attached at the end of this report. Hold Time: The samples were analyzed within the method required hold times with any exceptions noted below. Initial Calibrations (including MS Tune as applicable): All criteria were within method requirements with any exceptions noted below. Continuing Calibration: All criteria were within method requirements with any exceptions noted below. Internal Standards: All internal standards were within QC limits with any exceptions noted below. Surrogates: All surrogates were within QC limits with any exceptions noted below. Method Blank: All analytes were below the report limit in the method blank, where applicable, with any exceptions noted below. Laboratory Control Spike: All laboratory control spike compounds were within QC limits with any exceptions noted below. Matrix Spikes: All percent recoveries and relative percent differences (RPDs) were within acceptance criteria with any exceptions noted below. Additional Comments: This data package has been reviewed for quality and completeness and is approved for release. REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 9 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH1@5-7 Lab ID: 30392678001 Collected: 11/11/20 11:50 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 17:4111/17/20 07:5914.3 1 Surrogates o-Terphenyl (S)65 %.11/17/20 17:41 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/20/20 16:35 71-43-211/20/20 08:080.50 1 Ethylbenzene ND ug/kg 11/20/20 16:35 100-41-411/20/20 08:080.50 1 Naphthalene ND ug/kg 11/20/20 16:35 91-20-311/20/20 08:080.50 1 Toluene ND ug/kg 11/20/20 16:35 108-88-311/20/20 08:080.50 1 Xylene (Total)ND ug/kg 11/20/20 16:35 1330-20-711/20/20 08:081.0 1 Surrogates Toluene-d8 (S)93 %11/20/20 16:35 2037-26-511/20/20 08:0843-157 1 4-Bromofluorobenzene (S)97 %11/20/20 16:35 460-00-411/20/20 08:0834-145 1 1,2-Dichloroethane-d4 (S)113 %11/20/20 16:35 17060-07-011/20/20 08:0833-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 7.6 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 10 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH1@7-8 Lab ID: 30392678002 Collected: 11/11/20 11:50 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 18:2511/17/20 07:5914.1 1 Surrogates o-Terphenyl (S)63 %.11/17/20 18:25 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/20/20 17:00 71-43-211/20/20 08:081.2 1 Ethylbenzene ND ug/kg 11/20/20 17:00 100-41-411/20/20 08:081.2 1 Naphthalene ND ug/kg 11/20/20 17:00 91-20-311/20/20 08:081.2 1 Toluene ND ug/kg 11/20/20 17:00 108-88-311/20/20 08:081.2 1 Xylene (Total)ND ug/kg 11/20/20 17:00 1330-20-711/20/20 08:082.3 1 Surrogates Toluene-d8 (S)95 %11/20/20 17:00 2037-26-511/20/20 08:0843-157 1 4-Bromofluorobenzene (S)100 %11/20/20 17:00 460-00-411/20/20 08:0834-145 1 1,2-Dichloroethane-d4 (S)114 %11/20/20 17:00 17060-07-011/20/20 08:0833-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 6.7 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 11 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH2@5-7 Lab ID: 30392678003 Collected: 11/11/20 12:45 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 18:3111/17/20 07:5914.2 1 Surrogates o-Terphenyl (S)63 %.11/17/20 18:31 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/20/20 17:24 71-43-211/20/20 08:081.2 1 Ethylbenzene ND ug/kg 11/20/20 17:24 100-41-411/20/20 08:081.2 1 Naphthalene ND ug/kg 11/20/20 17:24 91-20-311/20/20 08:081.2 1 Toluene ND ug/kg 11/20/20 17:24 108-88-311/20/20 08:081.2 1 Xylene (Total)ND ug/kg 11/20/20 17:24 1330-20-711/20/20 08:082.5 1 Surrogates Toluene-d8 (S)95 %11/20/20 17:24 2037-26-511/20/20 08:0843-157 1 4-Bromofluorobenzene (S)97 %11/20/20 17:24 460-00-411/20/20 08:0834-145 1 1,2-Dichloroethane-d4 (S)113 %11/20/20 17:24 17060-07-011/20/20 08:0833-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 8.9 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 12 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH2@10-12 Lab ID: 30392678004 Collected: 11/11/20 12:45 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)14.4 mg/kg 11/17/20 18:3711/17/20 07:5914.4 1 Surrogates o-Terphenyl (S)58 %.11/17/20 18:37 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/20/20 17:49 71-43-211/20/20 08:082.2 1 Ethylbenzene ND ug/kg 11/20/20 17:49 100-41-411/20/20 08:082.2 1 Naphthalene ND ug/kg 11/20/20 17:49 91-20-311/20/20 08:082.2 1 Toluene ND ug/kg 11/20/20 17:49 108-88-311/20/20 08:082.2 1 Xylene (Total)ND ug/kg 11/20/20 17:49 1330-20-711/20/20 08:084.4 1 Surrogates Toluene-d8 (S)96 %11/20/20 17:49 2037-26-511/20/20 08:0843-157 1 4-Bromofluorobenzene (S)97 %11/20/20 17:49 460-00-411/20/20 08:0834-145 1 1,2-Dichloroethane-d4 (S)106 %11/20/20 17:49 17060-07-011/20/20 08:0833-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 8.1 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 13 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH2@15-17 Lab ID: 30392678005 Collected: 11/11/20 12:45 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)22.3 mg/kg 11/17/20 18:5011/17/20 07:5914.5 1 Surrogates o-Terphenyl (S)67 %.11/17/20 18:50 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/20/20 18:13 71-43-211/20/20 08:082.2 1 Ethylbenzene ND ug/kg 11/20/20 18:13 100-41-411/20/20 08:082.2 1 Naphthalene ND ug/kg 11/20/20 18:13 91-20-311/20/20 08:082.2 1 Toluene ND ug/kg 11/20/20 18:13 108-88-311/20/20 08:082.2 1 Xylene (Total)ND ug/kg 11/20/20 18:13 1330-20-711/20/20 08:084.4 1 Surrogates Toluene-d8 (S)96 %11/20/20 18:13 2037-26-511/20/20 08:0843-157 1 4-Bromofluorobenzene (S)96 %11/20/20 18:13 460-00-411/20/20 08:0834-145 1 1,2-Dichloroethane-d4 (S)106 %11/20/20 18:13 17060-07-011/20/20 08:0833-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 10.4 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 14 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH3@5-7 Lab ID: 30392678006 Collected: 11/11/20 14:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)21.4 mg/kg 11/17/20 18:5611/17/20 07:5915.8 1 Surrogates o-Terphenyl (S)68 %.11/17/20 18:56 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/20/20 18:38 71-43-211/20/20 08:081.7 1 Ethylbenzene ND ug/kg 11/20/20 18:38 100-41-411/20/20 08:081.7 1 Naphthalene ND ug/kg 11/20/20 18:38 91-20-311/20/20 08:081.7 1 Toluene ND ug/kg 11/20/20 18:38 108-88-311/20/20 08:081.7 1 Xylene (Total)ND ug/kg 11/20/20 18:38 1330-20-711/20/20 08:083.3 1 Surrogates Toluene-d8 (S)97 %11/20/20 18:38 2037-26-511/20/20 08:0843-157 1 4-Bromofluorobenzene (S)92 %11/20/20 18:38 460-00-411/20/20 08:0834-145 1 1,2-Dichloroethane-d4 (S)105 %11/20/20 18:38 17060-07-011/20/20 08:0833-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 16.4 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 15 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH3@10-12 Lab ID: 30392678007 Collected: 11/11/20 14:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)17.5 mg/kg 11/17/20 19:0311/17/20 07:5914.4 1 Surrogates o-Terphenyl (S)66 %.11/17/20 19:03 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 11:46 71-43-211/23/20 06:212.2 1 Ethylbenzene ND ug/kg 11/23/20 11:46 100-41-411/23/20 06:212.2 1 Naphthalene ND ug/kg 11/23/20 11:46 91-20-311/23/20 06:212.2 1 Toluene ND ug/kg 11/23/20 11:46 108-88-311/23/20 06:212.2 1 Xylene (Total)ND ug/kg 11/23/20 11:46 1330-20-711/23/20 06:214.5 1 Surrogates Toluene-d8 (S)94 %11/23/20 11:46 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)95 %11/23/20 11:46 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)103 %11/23/20 11:46 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 9.0 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 16 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH3@15-17 Lab ID: 30392678008 Collected: 11/11/20 14:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 19:1511/17/20 07:5914.2 1 Surrogates o-Terphenyl (S)66 %.11/17/20 19:15 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 12:11 71-43-211/23/20 06:211.2 1 Ethylbenzene ND ug/kg 11/23/20 12:11 100-41-411/23/20 06:211.2 1 Naphthalene ND ug/kg 11/23/20 12:11 91-20-311/23/20 06:211.2 1 Toluene ND ug/kg 11/23/20 12:11 108-88-311/23/20 06:211.2 1 Xylene (Total)ND ug/kg 11/23/20 12:11 1330-20-711/23/20 06:212.4 1 Surrogates Toluene-d8 (S)99 %11/23/20 12:11 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)101 %11/23/20 12:11 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)101 %11/23/20 12:11 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 6.7 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 17 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH4@5-7 Lab ID: 30392678009 Collected: 11/11/20 15:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)82.8 mg/kg 11/18/20 19:3811/17/20 07:5969.2 5 Surrogates o-Terphenyl (S)54 %.11/18/20 19:38 84-15-111/17/20 07:5910-114 5 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 10:57 71-43-211/23/20 06:212.3 1 Ethylbenzene ND ug/kg 11/23/20 10:57 100-41-411/23/20 06:212.3 1 Naphthalene ND ug/kg 11/23/20 10:57 91-20-311/23/20 06:212.3 1 Toluene ND ug/kg 11/23/20 10:57 108-88-311/23/20 06:212.3 1 Xylene (Total)ND ug/kg 11/23/20 10:57 1330-20-711/23/20 06:214.6 1 Surrogates Toluene-d8 (S)96 %11/23/20 10:57 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)96 %11/23/20 10:57 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)102 %11/23/20 10:57 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 6.7 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 18 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH4@10-12 Lab ID: 30392678010 Collected: 11/11/20 15:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)41.3 mg/kg 11/18/20 19:4411/17/20 07:5914.1 1 Surrogates o-Terphenyl (S)61 %.11/18/20 19:44 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 11:22 71-43-211/23/20 06:212.0 1 Ethylbenzene ND ug/kg 11/23/20 11:22 100-41-411/23/20 06:212.0 1 Naphthalene ND ug/kg 11/23/20 11:22 91-20-311/23/20 06:212.0 1 Toluene ND ug/kg 11/23/20 11:22 108-88-311/23/20 06:212.0 1 Xylene (Total)ND ug/kg 11/23/20 11:22 1330-20-711/23/20 06:214.1 1 Surrogates Toluene-d8 (S)97 %11/23/20 11:22 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)94 %11/23/20 11:22 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)109 %11/23/20 11:22 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 6.5 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 19 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH4@15-17 Lab ID: 30392678011 Collected: 11/11/20 15:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)29.8 mg/kg 11/18/20 19:5011/17/20 07:5914.8 1 Surrogates o-Terphenyl (S)58 %.11/18/20 19:50 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 12:36 71-43-211/23/20 06:211.9 1 Ethylbenzene ND ug/kg 11/23/20 12:36 100-41-411/23/20 06:211.9 1 Naphthalene ND ug/kg 11/23/20 12:36 91-20-311/23/20 06:211.9 1 Toluene ND ug/kg 11/23/20 12:36 108-88-311/23/20 06:211.9 1 Xylene (Total)ND ug/kg 11/23/20 12:36 1330-20-711/23/20 06:213.7 1 Surrogates Toluene-d8 (S)97 %11/23/20 12:36 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)95 %11/23/20 12:36 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)103 %11/23/20 12:36 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 11.2 %11/20/20 13:510.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 20 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH5@10-12 Lab ID: 30392678012 Collected: 11/12/20 10:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 19:5311/17/20 07:5914.0 1 Surrogates o-Terphenyl (S)61 %.11/17/20 19:53 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 13:00 71-43-211/23/20 06:212.4 1 Ethylbenzene ND ug/kg 11/23/20 13:00 100-41-411/23/20 06:212.4 1 Naphthalene ND ug/kg 11/23/20 13:00 91-20-311/23/20 06:212.4 1 Toluene ND ug/kg 11/23/20 13:00 108-88-311/23/20 06:212.4 1 Xylene (Total)ND ug/kg 11/23/20 13:00 1330-20-711/23/20 06:214.9 1 Surrogates Toluene-d8 (S)97 %11/23/20 13:00 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)96 %11/23/20 13:00 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)105 %11/23/20 13:00 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 6.8 %11/20/20 13:520.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 21 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH5@13-15 Lab ID: 30392678013 Collected: 11/12/20 10:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)5230 mg/kg 11/18/20 20:0311/17/20 07:591520 100 Surrogates o-Terphenyl (S)0 %.11/18/20 20:03 84-15-1 S411/17/20 07:5910-114 100 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-H/5030C Pace Analytical Services - Long Island 8260 MSV 5035A-H Med Level Benzene ND ug/kg 11/24/20 12:55 71-43-211/24/20 08:19110 1 Ethylbenzene ND ug/kg 11/24/20 12:55 100-41-411/24/20 08:19110 1 Naphthalene 15800 ug/kg 11/24/20 13:20 91-20-311/24/20 08:19220 2 Toluene ND ug/kg 11/24/20 12:55 108-88-311/24/20 08:19110 1 Xylene (Total)410 ug/kg 11/24/20 12:55 1330-20-711/24/20 08:19220 1 Surrogates Toluene-d8 (S)82 %11/24/20 12:55 2037-26-511/24/20 08:1943-157 1 4-Bromofluorobenzene (S)91 %11/24/20 12:55 460-00-411/24/20 08:1934-145 1 1,2-Dichloroethane-d4 (S)92 %11/24/20 12:55 17060-07-011/24/20 08:1933-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 12.7 %11/20/20 13:520.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 22 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH5@15-17 Lab ID: 30392678014 Collected: 11/12/20 10:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)77.8 mg/kg 11/17/20 20:0511/17/20 07:5913.8 1 Surrogates o-Terphenyl (S)59 %.11/17/20 20:05 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 14:38 71-43-211/23/20 06:212.4 1 Ethylbenzene ND ug/kg 11/23/20 14:38 100-41-411/23/20 06:212.4 1 Naphthalene 5.5 ug/kg 11/23/20 14:38 91-20-311/23/20 06:212.4 1 Toluene ND ug/kg 11/23/20 14:38 108-88-311/23/20 06:212.4 1 Xylene (Total)ND ug/kg 11/23/20 14:38 1330-20-711/23/20 06:214.9 1 Surrogates Toluene-d8 (S)97 %11/23/20 14:38 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)95 %11/23/20 14:38 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)109 %11/23/20 14:38 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 5.2 %11/20/20 13:520.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 23 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH6@5-7 Lab ID: 30392678015 Collected: 11/12/20 11:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 20:1811/17/20 07:5915.2 1 Surrogates o-Terphenyl (S)64 %.11/17/20 20:18 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 15:03 71-43-211/23/20 06:211.9 1 Ethylbenzene ND ug/kg 11/23/20 15:03 100-41-411/23/20 06:211.9 1 Naphthalene ND ug/kg 11/23/20 15:03 91-20-311/23/20 06:211.9 1 Toluene ND ug/kg 11/23/20 15:03 108-88-311/23/20 06:211.9 1 Xylene (Total)ND ug/kg 11/23/20 15:03 1330-20-711/23/20 06:213.7 1 Surrogates Toluene-d8 (S)91 %11/23/20 15:03 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)97 %11/23/20 15:03 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)103 %11/23/20 15:03 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 13.4 %11/22/20 09:480.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 24 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH6@10-12 Lab ID: 30392678016 Collected: 11/12/20 11:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 20:2411/17/20 07:5914.0 1 Surrogates o-Terphenyl (S)60 %.11/17/20 20:24 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 15:27 71-43-211/23/20 06:211.7 1 Ethylbenzene ND ug/kg 11/23/20 15:27 100-41-411/23/20 06:211.7 1 Naphthalene ND ug/kg 11/23/20 15:27 91-20-311/23/20 06:211.7 1 Toluene ND ug/kg 11/23/20 15:27 108-88-311/23/20 06:211.7 1 Xylene (Total)ND ug/kg 11/23/20 15:27 1330-20-711/23/20 06:213.4 1 Surrogates Toluene-d8 (S)97 %11/23/20 15:27 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)96 %11/23/20 15:27 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)109 %11/23/20 15:27 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 5.8 %11/22/20 09:480.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 25 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH6@15-17 Lab ID: 30392678017 Collected: 11/12/20 11:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 20:3111/17/20 07:5914.3 1 Surrogates o-Terphenyl (S)55 %.11/17/20 20:31 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 15:51 71-43-211/23/20 06:212.2 1 Ethylbenzene ND ug/kg 11/23/20 15:51 100-41-411/23/20 06:212.2 1 Naphthalene ND ug/kg 11/23/20 15:51 91-20-311/23/20 06:212.2 1 Toluene ND ug/kg 11/23/20 15:51 108-88-311/23/20 06:212.2 1 Xylene (Total)ND ug/kg 11/23/20 15:51 1330-20-711/23/20 06:214.3 1 Surrogates Toluene-d8 (S)95 %11/23/20 15:51 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)100 %11/23/20 15:51 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)104 %11/23/20 15:51 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 7.7 %11/22/20 09:480.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 26 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH7@5-7 Lab ID: 30392678018 Collected: 11/12/20 13:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 20:4311/17/20 07:5915.2 1 Surrogates o-Terphenyl (S)61 %.11/17/20 20:43 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 16:15 71-43-211/23/20 06:211.7 1 Ethylbenzene ND ug/kg 11/23/20 16:15 100-41-411/23/20 06:211.7 1 Naphthalene ND ug/kg 11/23/20 16:15 91-20-311/23/20 06:211.7 1 Toluene ND ug/kg 11/23/20 16:15 108-88-311/23/20 06:211.7 1 Xylene (Total)ND ug/kg 11/23/20 16:15 1330-20-711/23/20 06:213.5 1 Surrogates Toluene-d8 (S)99 %11/23/20 16:15 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)96 %11/23/20 16:15 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)107 %11/23/20 16:15 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 12.9 %11/22/20 09:480.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 27 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH7@10-12 Lab ID: 30392678019 Collected: 11/12/20 13:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/17/20 20:4911/17/20 07:5915.4 1 Surrogates o-Terphenyl (S)60 %.11/17/20 20:49 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 16:39 71-43-211/23/20 06:211.9 1 Ethylbenzene ND ug/kg 11/23/20 16:39 100-41-411/23/20 06:211.9 1 Naphthalene ND ug/kg 11/23/20 16:39 91-20-311/23/20 06:211.9 1 Toluene ND ug/kg 11/23/20 16:39 108-88-311/23/20 06:211.9 1 Xylene (Total)ND ug/kg 11/23/20 16:39 1330-20-711/23/20 06:213.8 1 Surrogates Toluene-d8 (S)100 %11/23/20 16:39 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)94 %11/23/20 16:39 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)108 %11/23/20 16:39 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 13.8 %11/22/20 09:480.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 28 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH7@15-17 Lab ID: 30392678020 Collected: 11/12/20 13:00 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)18.3 mg/kg 11/17/20 20:5611/17/20 07:5914.5 1 Surrogates o-Terphenyl (S)61 %.11/17/20 20:56 84-15-111/17/20 07:5910-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 17:04 71-43-211/23/20 06:211.7 1 Ethylbenzene ND ug/kg 11/23/20 17:04 100-41-411/23/20 06:211.7 1 Naphthalene ND ug/kg 11/23/20 17:04 91-20-311/23/20 06:211.7 1 Toluene ND ug/kg 11/23/20 17:04 108-88-311/23/20 06:211.7 1 Xylene (Total)ND ug/kg 11/23/20 17:04 1330-20-711/23/20 06:213.4 1 Surrogates Toluene-d8 (S)95 %11/23/20 17:04 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)93 %11/23/20 17:04 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)107 %11/23/20 17:04 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 8.1 %11/22/20 09:490.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 29 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH8@5-7 Lab ID: 30392678021 Collected: 11/12/20 14:20 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/18/20 17:3811/17/20 18:5114.3 1 Surrogates o-Terphenyl (S)59 %.11/18/20 17:38 84-15-111/17/20 18:5110-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 17:28 71-43-211/23/20 06:211.8 1 Ethylbenzene ND ug/kg 11/23/20 17:28 100-41-411/23/20 06:211.8 1 Naphthalene ND ug/kg 11/23/20 17:28 91-20-311/23/20 06:211.8 1 Toluene ND ug/kg 11/23/20 17:28 108-88-311/23/20 06:211.8 1 Xylene (Total)ND ug/kg 11/23/20 17:28 1330-20-711/23/20 06:213.6 1 Surrogates Toluene-d8 (S)95 %11/23/20 17:28 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)97 %11/23/20 17:28 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)109 %11/23/20 17:28 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 8.3 %11/22/20 09:490.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 30 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH8@10-12 Lab ID: 30392678022 Collected: 11/12/20 14:20 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/18/20 17:4411/17/20 18:5113.9 1 Surrogates o-Terphenyl (S)58 %.11/18/20 17:44 84-15-111/17/20 18:5110-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 17:52 71-43-211/23/20 06:212.1 1 Ethylbenzene ND ug/kg 11/23/20 17:52 100-41-411/23/20 06:212.1 1 Naphthalene ND ug/kg 11/23/20 17:52 91-20-311/23/20 06:212.1 1 Toluene ND ug/kg 11/23/20 17:52 108-88-311/23/20 06:212.1 1 Xylene (Total)ND ug/kg 11/23/20 17:52 1330-20-711/23/20 06:214.2 1 Surrogates Toluene-d8 (S)94 %11/23/20 17:52 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)95 %11/23/20 17:52 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)110 %11/23/20 17:52 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 4.8 %11/22/20 09:490.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 31 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: BH8@15-17 Lab ID: 30392678023 Collected: 11/12/20 14:20 Received: 11/13/20 10:15 Matrix: Solid Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions. Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8015D Preparation Method: EPA 3546 Pace Analytical Services - Greensburg 8015D TPH Microwave TPH (C10-C28)ND mg/kg 11/18/20 17:5011/17/20 18:5114.0 1 Surrogates o-Terphenyl (S)58 %.11/18/20 17:50 84-15-111/17/20 18:5110-114 1 Analytical Method: EPA 8260C Preparation Method: EPA 5035A-L Pace Analytical Services - Long Island 8260C MSV 5035A-L Low Level Benzene ND ug/kg 11/23/20 18:40 71-43-211/23/20 06:212.6 1 Ethylbenzene ND ug/kg 11/23/20 18:40 100-41-4 R111/23/20 06:212.6 1 Naphthalene 96.3 ug/kg 11/23/20 18:40 91-20-3 M111/23/20 06:212.6 1 Toluene ND ug/kg 11/23/20 18:40 108-88-311/23/20 06:212.6 1 Xylene (Total)ND ug/kg 11/23/20 18:40 1330-20-7 RS11/23/20 06:215.2 1 Surrogates Toluene-d8 (S)99 %11/23/20 18:40 2037-26-511/23/20 06:2143-157 1 4-Bromofluorobenzene (S)102 %11/23/20 18:40 460-00-411/23/20 06:2134-145 1 1,2-Dichloroethane-d4 (S)110 %11/23/20 18:40 17060-07-011/23/20 06:2133-150 1 Analytical Method: ASTM D2974-87 Pace Analytical Services - Greensburg Percent Moisture Percent Moisture 6.8 %11/22/20 09:490.10 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 32 of 53 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 30392678 Prax Air Magna Utah Sample: Trip Blank Lab ID: 30392678024 Collected: 11/12/20 00:01 Received: 11/13/20 10:15 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: EPA 8260B Pace Analytical Services - Greensburg 8260B MSV Benzene ND ug/L 11/20/20 01:14 71-43-21.0 1 Ethylbenzene ND ug/L 11/20/20 01:14 100-41-41.0 1 Naphthalene ND ug/L 11/20/20 01:14 91-20-32.0 1 Toluene ND ug/L 11/20/20 01:14 108-88-31.0 1 Xylene (Total)ND ug/L 11/20/20 01:14 1330-20-73.0 1 Surrogates Toluene-d8 (S)98 %.11/20/20 01:14 2037-26-570-130 1 4-Bromofluorobenzene (S)114 %.11/20/20 01:14 460-00-470-130 1 1,2-Dichloroethane-d4 (S)99 %.11/20/20 01:14 17060-07-070-130 1 Dibromofluoromethane (S)102 %.11/20/20 01:14 1868-53-770-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 33 of 53 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30392678 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 186951 EPA 5035A-L EPA 8260C 8260 MSV 5035A-L Low Level Laboratory:Pace Analytical Services - Long Island Associated Lab Samples: 30392678001, 30392678002, 30392678003, 30392678004, 30392678005, 30392678006 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 916526 Associated Lab Samples:30392678001, 30392678002, 30392678003, 30392678004, 30392678005, 30392678006 Matrix: Solid Analyzed Benzene ug/kg ND 2.0 11/20/20 10:10 Ethylbenzene ug/kg ND 2.0 11/20/20 10:10 Naphthalene ug/kg ND 2.0 11/20/20 10:10 Toluene ug/kg ND 2.0 11/20/20 10:10 Xylene (Total)ug/kg ND 4.0 11/20/20 10:10 1,2-Dichloroethane-d4 (S)%102 33-150 11/20/20 10:10 4-Bromofluorobenzene (S)%101 34-145 11/20/20 10:10 Toluene-d8 (S)%92 43-157 11/20/20 10:10 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 916527LABORATORY CONTROL SAMPLE: LCSSpike Benzene ug/kg 46.250.1 92 65-129 Ethylbenzene ug/kg 43.450.1 87 59-135 Naphthalene ug/kg 43.650.1 87 55-145 Toluene ug/kg 43.050.1 86 66-131 Xylene (Total)ug/kg 130150 87 62-135 1,2-Dichloroethane-d4 (S)%97 33-150 4-Bromofluorobenzene (S)%98 34-145 Toluene-d8 (S)%95 43-157 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 34 of 53 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30392678 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 186997 EPA 5035A-L EPA 8260C 8260 MSV 5035A-L Low Level Laboratory:Pace Analytical Services - Long Island Associated Lab Samples:30392678007, 30392678008, 30392678009, 30392678010, 30392678011, 30392678012, 30392678014, 30392678015, 30392678016, 30392678017, 30392678018, 30392678019, 30392678020, 30392678021, 30392678022, 30392678023 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 916829 Associated Lab Samples: 30392678007, 30392678008, 30392678009, 30392678010, 30392678011, 30392678012, 30392678014, 30392678015, 30392678016, 30392678017, 30392678018, 30392678019, 30392678020, 30392678021, 30392678022, 30392678023 Matrix: Solid Analyzed Benzene ug/kg ND 2.0 11/23/20 09:39 Ethylbenzene ug/kg ND 2.0 11/23/20 09:39 Naphthalene ug/kg ND 2.0 11/23/20 09:39 Toluene ug/kg ND 2.0 11/23/20 09:39 Xylene (Total)ug/kg ND 4.0 11/23/20 09:39 1,2-Dichloroethane-d4 (S)%94 33-150 11/23/20 09:39 4-Bromofluorobenzene (S)%101 34-145 11/23/20 09:39 Toluene-d8 (S)%94 43-157 11/23/20 09:39 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 916830LABORATORY CONTROL SAMPLE: LCSSpike Benzene ug/kg 49.850.2 99 65-129 Ethylbenzene ug/kg 46.350.2 92 59-135 Naphthalene ug/kg 42.250.2 84 55-145 Toluene ug/kg 48.350.2 96 66-131 Xylene (Total)ug/kg 141151 94 62-135 1,2-Dichloroethane-d4 (S)%92 33-150 4-Bromofluorobenzene (S)%99 34-145 Toluene-d8 (S)%94 43-157 Parameter Units MS Result % Rec Limits Qual% RecConc. 917488MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 30392678023 917489 MSD Result MSD % Rec RPD MSDMS Spike Conc. Benzene ug/kg 51.6 104 65-129106 1659.7ND 53.8 63.3 Ethylbenzene ug/kg R151.6 88 59-13598 2559.7ND 45.3 58.2 Naphthalene ug/kg E,M151.6 -100 55-145593 16459.796.3 44.6 450 Toluene ug/kg 51.6 95 66-13195 1559.7ND 49.1 56.9 Xylene (Total)ug/kg RS1558962-135101 27179ND138 181 1,2-Dichloroethane-d4 (S)%91 33-15089 4-Bromofluorobenzene (S)%92 34-14585 Toluene-d8 (S)%93 43-157103 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 35 of 53 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30392678 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 187176 EPA 5035A-H/5030C EPA 8260C 8260 MSV 5035A-H Med Laboratory:Pace Analytical Services - Long Island Associated Lab Samples: 30392678013 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 917791 Associated Lab Samples:30392678013 Matrix: Solid Analyzed Benzene ug/kg ND 99.0 11/24/20 11:11 Ethylbenzene ug/kg ND 99.0 11/24/20 11:11 Naphthalene ug/kg ND 99.0 11/24/20 11:11 Toluene ug/kg ND 99.0 11/24/20 11:11 Xylene (Total)ug/kg ND 198 11/24/20 11:11 1,2-Dichloroethane-d4 (S)%92 33-150 11/24/20 11:11 4-Bromofluorobenzene (S)%97 34-145 11/24/20 11:11 Toluene-d8 (S)%100 43-157 11/24/20 11:11 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 917792LABORATORY CONTROL SAMPLE: LCSSpike Benzene ug/kg 23502510 94 65-129 Ethylbenzene ug/kg 23202510 93 59-135 Naphthalene ug/kg 18702510 75 55-145 Toluene ug/kg 24402510 97 66-131 Xylene (Total)ug/kg 71207520 95 62-135 1,2-Dichloroethane-d4 (S)%90 33-150 4-Bromofluorobenzene (S)%100 34-145 Toluene-d8 (S)%98 43-157 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 36 of 53 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30392678 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 423958 EPA 8260B EPA 8260B 8260B MSV UST-WATER Laboratory:Pace Analytical Services - Greensburg Associated Lab Samples: 30392678024 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 2049480 Associated Lab Samples:30392678024 Matrix: Water Analyzed Benzene ug/L ND 1.0 11/20/20 00:24 Ethylbenzene ug/L ND 1.0 11/20/20 00:24 Naphthalene ug/L ND 2.0 11/20/20 00:24 Toluene ug/L ND 1.0 11/20/20 00:24 Xylene (Total)ug/L ND 3.0 11/20/20 00:24 1,2-Dichloroethane-d4 (S)%.101 70-130 11/20/20 00:24 4-Bromofluorobenzene (S)%.114 70-130 11/20/20 00:24 Dibromofluoromethane (S)%.101 70-130 11/20/20 00:24 Toluene-d8 (S)%.100 70-130 11/20/20 00:24 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2049481LABORATORY CONTROL SAMPLE: LCSSpike Benzene ug/L 20.320 102 70-130 Ethylbenzene ug/L 20.020 100 70-130 Naphthalene ug/L 23.720 118 55-160 Toluene ug/L 20.320 102 70-130 Xylene (Total)ug/L 58.660 98 70-130 1,2-Dichloroethane-d4 (S)%.101 70-130 4-Bromofluorobenzene (S)%.108 70-130 Dibromofluoromethane (S)%.101 70-130 Toluene-d8 (S)%.100 70-130 Parameter Units MS Result % Rec Limits Qual% RecConc. 2049482MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 30392368021 2049483 MSD Result MSD % Rec RPD MSDMS Spike Conc. Benzene ug/L 20 103 50-149108 520ND20.5 21.5 Ethylbenzene ug/L 20 104 63-135109 520ND20.8 21.8 Naphthalene ug/L 20 78 30-15793 1820ND15.7 18.7 Toluene ug/L 20 102 59-139108 520ND20.5 21.5 Xylene (Total)ug/L 60 101 63-135106 560ND60.9 63.8 1,2-Dichloroethane-d4 (S)%.95 70-130102 4-Bromofluorobenzene (S)%.102 70-130105 Dibromofluoromethane (S)%.102 70-130101 Toluene-d8 (S)%.100 70-13099 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 37 of 53 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30392678 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 423327 EPA 3546 EPA 8015D EPA 8015D TPH Laboratory:Pace Analytical Services - Greensburg Associated Lab Samples:30392678001, 30392678002, 30392678003, 30392678004, 30392678005, 30392678006, 30392678007, 30392678008, 30392678009, 30392678010, 30392678011, 30392678012, 30392678013, 30392678014, 30392678015, 30392678016, 30392678017, 30392678018, 30392678019, 30392678020 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 2046577 Associated Lab Samples: 30392678001, 30392678002, 30392678003, 30392678004, 30392678005, 30392678006, 30392678007, 30392678008, 30392678009, 30392678010, 30392678011, 30392678012, 30392678013, 30392678014, 30392678015, 30392678016, 30392678017, 30392678018, 30392678019, 30392678020 Matrix: Solid Analyzed TPH (C10-C28)mg/kg ND 13.3 11/17/20 17:22 o-Terphenyl (S)%.65 10-114 11/17/20 17:22 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2046578LABORATORY CONTROL SAMPLE: LCSSpike TPH (C10-C28)mg/kg 56.565.4 86 51-106 o-Terphenyl (S)%.70 10-114 Parameter Units MS Result % Rec Limits Qual% RecConc. 2046579MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 30392678001 2046580 MSD Result MSD % Rec RPD MSDMS Spike Conc. TPH (C10-C28)mg/kg 69.9 71 10-15573 470.8ND 57.1 59.2 o-Terphenyl (S)%.67 10-11472 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 38 of 53 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30392678 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 423519 EPA 3546 EPA 8015D EPA 8015D TPH Laboratory:Pace Analytical Services - Greensburg Associated Lab Samples: 30392678021, 30392678022, 30392678023 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 2047563 Associated Lab Samples:30392678021, 30392678022, 30392678023 Matrix: Solid Analyzed TPH (C10-C28)mg/kg ND 13.1 11/18/20 16:41 o-Terphenyl (S)%.62 10-114 11/18/20 16:41 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 2047564LABORATORY CONTROL SAMPLE: LCSSpike TPH (C10-C28)mg/kg 50.266.1 76 51-106 o-Terphenyl (S)%.62 10-114 Parameter Units MS Result % Rec Limits Qual% RecConc. 2047565MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 7349860001 2047566 MSD Result MSD % Rec RPD MSDMS Spike Conc. TPH (C10-C28)mg/kg M683.5 572 10-155553 91066951170 1280 o-Terphenyl (S)%.46 10-11447 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 39 of 53 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30392678 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 424235 ASTM D2974-87 ASTM D2974-87 Dry Weight/Percent Moisture Laboratory:Pace Analytical Services - Greensburg Associated Lab Samples:30392678001, 30392678002, 30392678003, 30392678004, 30392678005, 30392678006, 30392678007, 30392678008, 30392678009, 30392678010, 30392678011, 30392678012, 30392678013, 30392678014 Parameter Units Dup Result QualifiersRPDResult 30392575002 2050513SAMPLE DUPLICATE: Percent Moisture %65.2 264.2 Parameter Units Dup Result QualifiersRPDResult 30392575003 2050559SAMPLE DUPLICATE: Percent Moisture %29.5 528.2 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 40 of 53 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 30392678 Prax Air Magna Utah Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 424336 ASTM D2974-87 ASTM D2974-87 Dry Weight/Percent Moisture Laboratory:Pace Analytical Services - Greensburg Associated Lab Samples:30392678015, 30392678016, 30392678017, 30392678018, 30392678019, 30392678020, 30392678021, 30392678022, 30392678023 Parameter Units Dup Result QualifiersRPDResult 30392678015 2051196SAMPLE DUPLICATE: Percent Moisture %16.4 2013.4 Parameter Units Dup Result QualifiersRPDResult 30392678016 2051197SAMPLE DUPLICATE: Percent Moisture %7.1 205.8 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 41 of 53 #=QL# QUALIFIERS Pace Project No.: Project: 30392678 Prax Air Magna Utah DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot. ND - Not Detected at or above adjusted reporting limit. TNTC - Too Numerous To Count J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL - Adjusted Method Detection Limit. PQL - Practical Quantitation Limit. RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and bias for a specific analyte in a specific matrix. S - Surrogate 1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is a combined concentration. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) DUP - Sample Duplicate RPD - Relative Percent Difference NC - Not Calculable. SG - Silica Gel - Clean-Up U - Indicates the compound was analyzed for, but not detected. N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for each analyte is a combined concentration. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TNI - The NELAC Institute. ANALYTE QUALIFIERS Analyte concentration exceeded the calibration range. The reported result is estimated.E Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1 Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution.M6 RPD value was outside control limits.R1 The RPD value in one of the constituent analytes was outside the control limits.RS Surrogate recovery not evaluated against control limits due to sample dilution.S4 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 42 of 53 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 30392678 Prax Air Magna Utah Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 30392678001 423327 423462BH1@5-7 EPA 3546 EPA 8015D 30392678002 423327 423462BH1@7-8 EPA 3546 EPA 8015D 30392678003 423327 423462BH2@5-7 EPA 3546 EPA 8015D 30392678004 423327 423462BH2@10-12 EPA 3546 EPA 8015D 30392678005 423327 423462BH2@15-17 EPA 3546 EPA 8015D 30392678006 423327 423462BH3@5-7 EPA 3546 EPA 8015D 30392678007 423327 423462BH3@10-12 EPA 3546 EPA 8015D 30392678008 423327 423462BH3@15-17 EPA 3546 EPA 8015D 30392678009 423327 423462BH4@5-7 EPA 3546 EPA 8015D 30392678010 423327 423462BH4@10-12 EPA 3546 EPA 8015D 30392678011 423327 423462BH4@15-17 EPA 3546 EPA 8015D 30392678012 423327 423462BH5@10-12 EPA 3546 EPA 8015D 30392678013 423327 423462BH5@13-15 EPA 3546 EPA 8015D 30392678014 423327 423462BH5@15-17 EPA 3546 EPA 8015D 30392678015 423327 423462BH6@5-7 EPA 3546 EPA 8015D 30392678016 423327 423462BH6@10-12 EPA 3546 EPA 8015D 30392678017 423327 423462BH6@15-17 EPA 3546 EPA 8015D 30392678018 423327 423462BH7@5-7 EPA 3546 EPA 8015D 30392678019 423327 423462BH7@10-12 EPA 3546 EPA 8015D 30392678020 423327 423462BH7@15-17 EPA 3546 EPA 8015D 30392678021 423519 423564BH8@5-7 EPA 3546 EPA 8015D 30392678022 423519 423564BH8@10-12 EPA 3546 EPA 8015D 30392678023 423519 423564BH8@15-17 EPA 3546 EPA 8015D 30392678001 186951 186954BH1@5-7 EPA 5035A-L EPA 8260C 30392678002 186951 186954BH1@7-8 EPA 5035A-L EPA 8260C 30392678003 186951 186954BH2@5-7 EPA 5035A-L EPA 8260C 30392678004 186951 186954BH2@10-12 EPA 5035A-L EPA 8260C 30392678005 186951 186954BH2@15-17 EPA 5035A-L EPA 8260C 30392678006 186951 186954BH3@5-7 EPA 5035A-L EPA 8260C 30392678007 186997 187149BH3@10-12 EPA 5035A-L EPA 8260C 30392678008 186997 187149BH3@15-17 EPA 5035A-L EPA 8260C 30392678009 186997 187149BH4@5-7 EPA 5035A-L EPA 8260C 30392678010 186997 187149BH4@10-12 EPA 5035A-L EPA 8260C 30392678011 186997 187149BH4@15-17 EPA 5035A-L EPA 8260C 30392678012 186997 187149BH5@10-12 EPA 5035A-L EPA 8260C 30392678014 186997 187149BH5@15-17 EPA 5035A-L EPA 8260C 30392678015 186997 187149BH6@5-7 EPA 5035A-L EPA 8260C 30392678016 186997 187149BH6@10-12 EPA 5035A-L EPA 8260C 30392678017 186997 187149BH6@15-17 EPA 5035A-L EPA 8260C 30392678018 186997 187149BH7@5-7 EPA 5035A-L EPA 8260C 30392678019 186997 187149BH7@10-12 EPA 5035A-L EPA 8260C 30392678020 186997 187149BH7@15-17 EPA 5035A-L EPA 8260C 30392678021 186997 187149BH8@5-7 EPA 5035A-L EPA 8260C 30392678022 186997 187149BH8@10-12 EPA 5035A-L EPA 8260C 30392678023 186997 187149BH8@15-17 EPA 5035A-L EPA 8260C 30392678013 187176 187177BH5@13-15 EPA 5035A-H/5030C EPA 8260C REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 43 of 53 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 30392678 Prax Air Magna Utah Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 30392678024 423958Trip Blank EPA 8260B 30392678001 424235BH1@5-7 ASTM D2974-87 30392678002 424235BH1@7-8 ASTM D2974-87 30392678003 424235BH2@5-7 ASTM D2974-87 30392678004 424235BH2@10-12 ASTM D2974-87 30392678005 424235BH2@15-17 ASTM D2974-87 30392678006 424235BH3@5-7 ASTM D2974-87 30392678007 424235BH3@10-12 ASTM D2974-87 30392678008 424235BH3@15-17 ASTM D2974-87 30392678009 424235BH4@5-7 ASTM D2974-87 30392678010 424235BH4@10-12 ASTM D2974-87 30392678011 424235BH4@15-17 ASTM D2974-87 30392678012 424235BH5@10-12 ASTM D2974-87 30392678013 424235BH5@13-15 ASTM D2974-87 30392678014 424235BH5@15-17 ASTM D2974-87 30392678015 424336BH6@5-7 ASTM D2974-87 30392678016 424336BH6@10-12 ASTM D2974-87 30392678017 424336BH6@15-17 ASTM D2974-87 30392678018 424336BH7@5-7 ASTM D2974-87 30392678019 424336BH7@10-12 ASTM D2974-87 30392678020 424336BH7@15-17 ASTM D2974-87 30392678021 424336BH8@5-7 ASTM D2974-87 30392678022 424336BH8@10-12 ASTM D2974-87 30392678023 424336BH8@15-17 ASTM D2974-87 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 11/25/2020 05:21 PM Pace Analytical Services, LLC 1638 Roseytown Road - Suites 2,3,4 Greensburg, PA 15601 (724)850-5600 Page 44 of 53 Page 45 of 53 Page 46 of 53 Page 47 of 53 Page 48 of 53 Page 49 of 53 Page 50 of 53 Page 51 of 53 Page 52 of 53 Page 53 of 53 Appendix D Historical Soil Data Historical Soil Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah CTC-B15W-R 15FT CTC-B17W-R 15-18FT CTC-B17W-R 18-20FT B-MW24-R 13-15FT Tier 11 09/17/15 09/17/15 09/17/15 09/17/15 Contaminant (mg/kg)(mg/kg)(mg/kg)(mg/kg)(mg/kg) Benzene 0.9 ND 0.005 ND 0.005 ND 0.05 ND 0.05 Toluene 25 ND 0.025 ND 0.025 ND 0.25 ND 0.25 Ethylbenzene 23 ND 0.005 ND 0.005 0.344 ND 0.05 Total Xylenes 142 ND 0.015 ND 0.015 ND 0.15 ND 0.15 TPH-DRO 5,000 ND 4.0 1,130 8,500 2,980 TPH-GRO 1,500 ND 0.5 7.44 205 46.1 MTBE 0.3 ND 0.005 ND 0.005 ND 0.05 ND 0.05 Naphthalene 51 ND 0.025 ND 0.025 1.91 ND 0.25 Notes: TPH-DRO - Total Petroleum Hydrocarbons-Diesel Range Organics TPH-DRO - Total Petroleum Hydrocarbons-Gasoline Range Organics MTBE - Methyl tert-butyl ether mg/kg = Milligram per kilogram. ND 0.005 = Concentration not detected at the laboratory specified detection limit. Sample results that exceed the Tier 1 Screening Criteria (Tier 1) appear in black shaded cells with bold white text. 1 Tier 1 Screening Criteria (Tier 1) taken from Utah Department of Environmental Quality Guildelines for Utah's Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3 dated March 2015. Page 1 of 2 Confirmation Soil Sample Analytical Results Linde, Inc. 12385 West US Highway Alternate 40 Magna, Utah Tier 11 Results Sample Identification Sample Date Contaminant (mg/kg)(mg/kg) B-MW-24-RS (3-5)08/20/19 TPH-DRO 5,000 8.5 B-MW-24-RS (7-9)08/20/19 TPH-DRO 5,000 ND 7.1 B-MW-24-RS (10-12)08/20/19 TPH-DRO 5,000 ND 6.9 CTC-B17W-RS (3-5)08/20/19 TPH-DRO 5,000 10.9 CTC-B17W-RS (7-9)08/20/19 TPH-DRO 5,000 ND 6.9 CTC-B17W-RS (11-13)08/20/19 TPH-DRO 5,000 10.5 Notes: TPH-DRO - Total Petroleum Hydrocarbons-Diesel Range Organics mg/kg = Milligram per kilogram. ND 0.005 = Concentration not detected at the laboratory specified detection limit. 1 Tier 1 Screening Criteria (Tier 1) taken from Utah Department of Environmental Quality Guidelines for Utah's Corrective Action Process for Leaking Underground Storage Tank Sites, Table 1-3 dated March 2015. Page 2 of 2 Appendix E Mann-Kendall Statistical Test Mann-Kendall Statistical Test Instructions:Enter input data in yellow cells. To use the spreadsheet, provide a mimimum of four and up to a maximum of twenty rounds of data that are not seasonally affected. Use consistent units. The spreadsheet contains several error checks, and a data entry error may cause "DATA ERR" or "DATE ERR" to be displayed. Dates that are not consecutive will show an error message and will not display the test results. The spreadsheet tests the data for both increasing and decreasing trends at both 80 percent and 90 percent confidence levels. If an increasing or decreasing trend is not present, an additional coefficient of variation test is used to test for stability, as proposed by Wiedemeier et al, 1999. For non-detect values DO NOT ENTER 0. Enter half of the reported detection limit. If there are no data for a particular chemical, leave that cell blank. Site Name =Praxair-Magna Facility No. = 4002146 Contaminant =TPH-DRO Monitoring Well=CTC-B14W Concentration Concentration Concentration Concentration Concentration Concentration Event Sampling Date (leave blank (leave blank (leave blank (leave blank (leave blank (leave blank Number (most recent last) if no data) if no data) if no data) if no data) if no data) if no data) 1 8/20/19 73.2 2 2/19/20 33.8 3 9/17/20 20.8 4 11/10/20 39.0 5 3/31/21 1.1 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mann Kendall Statistic (S) = -6.0 0.0 0.0 0.0 0.0 0.0 Number of Rounds (n) = 5 0 0 0 0 0 Average = 33.58 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! Standard Deviation = 26.540 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! Coefficient of Variation(CV)= 0.790 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! Error Check, Blank if No Errors Detected n<4 n<4 n<4 n<4 n<4 Trend ≥ 80% Confidence Level DECREASING n<4 n<4 n<4 n<4 n<4 Trend ≥ 90% Confidence Level No Trend n<4 n<4 n<4 n<4 n<4 Stability Test, If No Trend Exists at n<4 n<4 n<4 n<4 n<4 80% Confidence Level NA n<4 n<4 n<4 n<4 n<4 Data Entry By = PJB Date = 23-Apr-21 Checked By = RTM Magna, Utah 84044 Mann-Kendall Statistical Test Instructions:Enter input data in yellow cells. To use the spreadsheet, provide a mimimum of four and up to a maximum of twenty rounds of data that are not seasonally affected. Use consistent units. The spreadsheet contains several error checks, and a data entry error may cause "DATA ERR" or "DATE ERR" to be displayed. Dates that are not consecutive will show an error message and will not display the test results. The spreadsheet tests the data for both increasing and decreasing trends at both 80 percent and 90 percent confidence levels. If an increasing or decreasing trend is not present, an additional coefficient of variation test is used to test for stability, as proposed by Wiedemeier et al, 1999. For non-detect values DO NOT ENTER 0. Enter half of the reported detection limit. If there are no data for a particular chemical, leave that cell blank. Site Name =Praxair-Magna Facility No. = 4002146 Contaminant =TPH-DRO Monitoring Well=CTC-B25WR Concentration Concentration Concentration Concentration Concentration Concentration Event Sampling Date (leave blank (leave blank (leave blank (leave blank (leave blank (leave blank Number (most recent last) if no data) if no data) if no data) if no data) if no data) if no data) 1 11/14/19 23.3 2 6/25/20 3.4 3 9/17/20 3.6 4 11/10/20 39.6 5 3/31/21 25.9 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mann Kendall Statistic (S) =4.0 0.0 0.0 0.0 0.0 0.0 Number of Rounds (n) =5 0 0 0 0 0 Average =19.16 #DIV/0!#DIV/0!#DIV/0! #DIV/0!#DIV/0! Standard Deviation =15.579 #DIV/0!#DIV/0!#DIV/0! #DIV/0!#DIV/0! Coefficient of Variation(CV)=0.813 #DIV/0!#DIV/0!#DIV/0! #DIV/0!#DIV/0! Error Check, Blank if No Errors Detected n<4 n<4 n<4 n<4 n<4 Trend ≥ 80% Confidence Level No Trend n<4 n<4 n<4 n<4 n<4 Trend ≥ 90% Confidence Level No Trend n<4 n<4 n<4 n<4 n<4 Stability Test, If No Trend Exists at CV <= 1 n<4 n<4 n<4 n<4 n<4 80% Confidence Level STABLE n<4 n<4 n<4 n<4 n<4 Data Entry By = PJB Date = 23-Apr-21 Checked By = RTM Magna, Utah 84044 Appendix C Digitized Coordinates of the Contours Appendix C, Table C-1 Area of Contour Lines August 20, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449687.016 7434150 700.00 160.00 1449682.623 7434325 700.00 310.00 105000.0 1449863.742 7434313 860.00 310.00 -49600.0 1449861.039 7434146 860.00 160.00 -129000.0 1449687.016 7434150 700.00 160.00 25600.0 24000.0 1449734.751 7434165 734.75 164.92 1449743.048 7434161 743.05 161.37 -3980.8 1449747.394 7434161 747.39 160.77 -1141.6 1449760.233 7434168 760.23 168.28 3545.9 1449769.715 7434175 769.72 174.80 3360.1 1449778.012 7434180 778.01 180.13 2655.0 1449789.666 7434189 789.67 188.63 4509.1 1449800.531 7434197 800.53 196.73 4346.2 1449809.025 7434203 809.02 203.44 3705.6 1449819.494 7434212 819.49 212.13 4901.8 1449826.211 7434218 826.21 218.45 3755.4 1449833.717 7434226 833.72 225.57 4235.6 1449843.001 7434235 843.00 234.85 5646.2 1449850.705 7434245 850.71 244.53 6350.4 1449853.076 7434257 853.08 256.58 9671.1 1449846.162 7434270 846.16 269.81 13064.3 1449828.779 7434279 828.78 279.30 12713.3 1449809.025 7434284 809.02 284.23 9610.0 1449790.259 7434291 790.26 290.75 10607.7 1449774.851 7434297 774.85 297.27 9631.3 1449755.098 7434302 755.10 301.81 9392.6 1449737.517 7434303 737.52 303.20 6350.2 1449722.702 7434298 722.70 298.26 849.8 1449709.862 7434288 709.86 288.18 -3451.1 1449707.294 7434277 707.29 276.53 -7533.1 1449702.158 7434266 702.16 265.86 -6124.4 1449700.38 7434253 700.38 252.63 -8820.4 1449702.553 7434244 702.55 244.13 -6498.0 1449704.923 7434228 704.92 228.33 -11681.1 1449708.084 7434215 708.08 214.70 -10329.8 1449710.652 7434203 710.65 203.05 -8803.8 1449714.01 7434195 714.01 194.75 -6577.8 1449717.961 7434185 717.96 184.87 -7821.6 1449725.27 7434173 725.27 172.82 -10002.4 1449734.751 7434165 734.75 164.92 -7369.4 14383.3 1 Page 1 of 5 Appendix C, Table C-1 Area of Contour Lines August 20, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449806.464 7434220 806.46 219.91 1449816.657 7434229 816.66 229.32 5346.6 1449825.282 7434238 825.28 237.63 4809.7 1449833.437 7434246 833.44 245.94 4921.5 1449836.26 7434252 836.26 251.75 4141.7 1449834.535 7434256 834.53 256.29 4237.4 1449830.928 7434259 830.93 259.12 3280.1 1449821.519 7434261 821.52 261.47 4392.7 1449813.521 7434264 813.52 263.66 3894.8 1449801.446 7434265 801.45 264.76 4076.8 1449791.409 7434266 791.41 265.55 3285.7 1449779.491 7434265 779.49 265.07 2792.5 1449770.238 7434266 770.24 265.55 2819.3 1449765.063 7434269 765.06 268.84 3910.8 1449760.986 7434277 760.99 276.52 6975.0 1449757.693 7434282 757.69 282.01 5087.5 1449755.654 7434284 755.65 284.05 2119.6 1449749.695 7434290 749.70 289.70 5958.8 1449743.265 7434293 743.27 292.52 3978.9 1449734.327 7434292 734.33 292.36 2498.2 1449726.486 7434288 726.49 288.44 -586.5 1449721.154 7434282 721.15 282.48 -2791.3 1449718.174 7434276 718.17 275.58 -4134.4 1449714.567 7434266 714.57 265.86 -5988.7 1449712.842 7434255 712.84 254.57 -7609.6 1449713.626 7434246 713.63 246.26 -6124.4 1449714.254 7434238 714.25 237.79 -6197.7 1449715.038 7434229 715.04 228.85 -6571.0 1449718.017 7434218 718.02 218.19 -8306.9 1449721.467 7434207 721.47 206.58 -9085.1 1449724.29 7434199 724.29 198.74 -6240.2 1449728.524 7434191 728.52 190.74 -6634.3 1449736.679 7434185 736.68 185.41 -5439.9 1449747.186 7434182 747.19 181.96 -4489.7 1449754.4 7434182 754.40 182.27 -1078.3 1449765.22 7434189 765.22 189.49 3469.7 1449774.473 7434195 774.47 195.45 2806.9 1449782.157 7434201 782.16 201.09 2870.5 1449785.607 7434204 785.61 203.91 1514.1 1449806.464 7434220 806.46 219.91 8313.2 8112.1 2 Page 2 of 5 Appendix C, Table C-1 Area of Contour Lines August 20, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449779.491 7434217 779.49 217.40 0.0 1449785.136 7434223 785.14 222.89 3051.1 1449792.193 7434231 792.19 230.89 4706.5 1449794.389 7434236 794.39 235.75 3344.3 1449793.605 7434242 793.60 241.71 4918.8 1449791.409 7434245 791.41 245.16 3268.6 1449786.077 7434248 786.08 247.82 3417.0 1449777.766 7434252 777.77 251.75 5141.6 1449769.768 7434256 769.77 255.82 5184.6 1449765.534 7434261 765.53 260.68 4825.4 1449760.359 7434267 760.36 266.96 6151.1 1449756.752 7434274 756.75 274.01 6328.7 1449753.772 7434279 753.77 278.72 4376.7 1449747.186 7434283 747.19 282.95 5027.4 1449740.443 7434284 740.44 283.89 2611.1 1449732.758 7434281 732.76 281.38 323.6 1449727.583 7434276 727.58 276.21 -2335.9 1449723.82 7434268 723.82 267.74 -5121.8 1449721.467 7434258 721.47 258.02 -6407.8 1449720.683 7434251 720.68 250.80 -5002.2 1449721.31 7434244 721.31 243.59 -5356.1 1449722.408 7434237 722.41 236.53 -5357.6 1449724.29 7434227 724.29 226.97 -7355.7 1449728.054 7434218 728.05 218.19 -7214.9 1449732.288 7434211 732.29 211.13 -6061.7 1449737.62 7434204 737.62 204.07 -6293.4 1449742.952 7434198 742.95 197.96 -5599.4 1449748.284 7434195 748.28 195.13 -3152.7 1449754.87 7434197 754.87 196.54 -229.1 1449763.025 7434201 763.02 200.78 1593.5 1449769.768 7434207 769.77 206.58 3073.4 1449774.786 7434211 774.79 211.44 2705.5 1449780.118 7434217 780.12 216.93 3125.2 1449779.491 7434217 779.49 217.40 503.1 4094.4 5 Page 3 of 5 Appendix C, Table C-1 Area of Contour Lines August 20, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449761.613 7434223 761.61 222.89 0.0 1449764.75 7434230 764.75 230.26 4914.4 1449765.534 7434234 765.53 233.55 2337.9 1449765.534 7434244 765.53 244.22 8163.5 1449763.182 7434252 763.18 252.37 6817.1 1449759.732 7434258 759.73 258.49 5538.3 1449755.654 7434264 755.65 263.82 5104.8 1449750.793 7434267 750.79 267.27 3889.6 1449743.893 7434270 743.89 269.78 3728.0 1449735.424 7434268 735.42 267.90 884.7 1449729.936 7434262 729.94 262.10 -2796.8 1449728.524 7434254 728.52 253.63 -5811.4 1449728.054 7434246 728.05 246.41 -5136.1 1449729.622 7434237 729.62 237.32 -7008.5 1449731.817 7434230 731.82 230.26 -5669.9 1449736.365 7434221 736.37 221.32 -7588.7 1449741.384 7434215 741.38 215.36 -5498.8 1449748.284 7434214 748.28 213.79 -2648.7 1449754.87 7434216 754.87 215.83 117.4 1449759.261 7434220 759.26 219.75 2011.8 1449761.613 7434223 761.61 222.89 1864.4 1606.6 10 1449752.047 7434231 752.05 230.73 1449754.4 7434236 754.40 236.38 3703.0 1449757.379 7434241 757.38 241.08 2844.9 1449759.104 7434247 759.10 246.57 3741.2 1449757.379 7434254 757.38 254.10 6139.4 1449752.361 7434259 752.36 258.96 4957.1 1449747.186 7434260 747.19 260.37 2402.0 1449740.443 7434260 740.44 259.74 1287.1 1449734.954 7434256 734.95 255.82 -1477.3 1449733.386 7434249 733.39 249.39 -4324.3 1449733.386 7434242 733.39 242.18 -5290.5 1449735.268 7434234 735.27 234.34 -6206.2 1449738.718 7434228 738.72 228.07 -5420.7 1449745.931 7434226 745.93 225.71 -3382.9 1449750.165 7434228 750.17 228.07 799.0 1449752.047 7434231 752.05 230.73 1570.7 671.2 20 Page 4 of 5 Appendix C, Table C-1 Area of Contour Lines August 20, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449749.381 7434239 749.38 239.20 0.0 1449751.106 7434244 751.11 244.06 3230.4 1449750.009 7434250 750.01 250.33 4979.5 1449747.029 7434255 747.03 255.04 4274.4 1449740.756 7434256 740.76 255.67 2068.4 1449736.679 7434250 736.68 250.49 -2791.0 1449738.09 7434244 738.09 244.37 -4859.1 1449742.168 7434239 742.17 238.57 -5279.1 1449745.147 7434237 745.15 236.53 -2223.9 1449749.381 7434239 749.38 239.20 985.0 192.3 40 1449744.834 7434249 744.83 248.92 73.2 Page 5 of 5 Appendix C, Table C-2 Area of Contour Lines November 14, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449746 7434249 745.81 248.98 50.3 1449744 7434258 744.12 257.77 1449740 7434251 740.07 251.35 -3732.24 1449741 7434245 740.74 244.59 -5171.37 1449742 7434236 742.09 236.14 -6588.19 1449746 7434231 746.15 231.07 -4718.94 1449751 7434228 750.54 227.69 -3536.37 1449755 7434229 755.27 229.05 -62.6952 1449759 7434235 758.99 235.13 3742.485 1449759 7434242 759.33 242.22 5306.411 1449756 7434249 756.29 248.98 5868.323 1449753 7434255 752.57 255.06 5525.477 1449744 7434258 744.12 257.77 4189.113 410.9998 40 Page 1 of 6 Appendix C, Table C-2 Area of Contour Lines November 14, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449748 7434199 748.18 199.31 0 1449753 7434192 753.25 191.54 -6824.99 1449760 7434185 759.67 184.78 -6320.29 1449766 7434181 766.09 181.40 -3753.31 1449773 7434183 773.18 183.43 265.9746 1449779 7434189 779.26 188.83 3064.573 1449782 7434195 782.31 194.58 3902.172 1449784 7434203 784.33 202.69 5949.859 1449784 7434210 784.00 210.12 5899.224 1449783 7434221 782.64 220.60 8496.503 1449780 7434228 780.28 228.37 6604.429 1449776 7434237 775.89 236.82 7594.764 1449772 7434243 772.17 243.24 5861.646 1449766 7434251 766.09 250.67 7219.759 1449760 7434257 760.34 256.75 6099.584 1449756 7434262 755.61 262.16 5325.454 1449748 7434265 747.84 264.86 4080.107 1449741 7434261 741.08 261.15 -989.723 1449737 7434254 737.36 254.05 -4288.1 1449736 7434249 736.01 248.64 -3643.21 1449735 7434242 735.00 241.55 -4970.75 1449736 7434233 736.01 233.10 -6453.93 1449737 7434226 736.69 226.34 -5131.64 1449740 7434215 740.07 215.19 -8979.64 1449744 7434207 743.78 207.08 -6801.67 1449748 7434199 748.18 199.31 -6690.29 2758.249 20 Page 2 of 6 Appendix C, Table C-2 Area of Contour Lines November 14, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449790 7434202 790.42 202.01 0 1449791 7434208 791.09 208.43 4938.16 1449791 7434217 790.75 216.54 6486.039 1449789 7434225 789.06 224.65 6778.726 1449787 7434233 787.37 233.44 7311.99 1449782 7434241 782.31 240.87 7036.554 1449779 7434247 778.59 246.95 5653.589 1449773 7434253 772.84 253.04 6154.278 1449766 7434259 765.75 259.12 6496.291 1449760 7434264 760.00 264.19 5369.797 1449751 7434270 751.22 269.59 6430.052 1449742 7434269 742.09 269.26 2205.811 1449737 7434263 736.69 263.17 -3057.94 1449732 7434254 731.62 253.71 -5636.21 1449730 7434244 730.27 243.91 -6826.48 1449730 7434234 730.27 233.78 -7402.92 1449732 7434226 731.96 226.34 -5823.79 1449733 7434217 733.31 216.54 -7478.65 1449736 7434209 736.35 209.11 -6109.96 1449739 7434201 739.05 201.00 -6536.94 1449743 7434193 743.45 192.89 -6876.54 1449749 7434186 748.85 186.13 -6067.21 1449753 7434179 752.91 179.37 -5815.63 1449758 7434175 758.31 175.32 -4022.76 1449762 7434171 762.37 170.92 -4042.03 1449772 7434171 771.83 170.92 -1617.2 1449778 7434174 777.58 174.30 1626.216 1449782 7434181 781.97 181.40 4752.059 1449785 7434189 785.35 188.83 5200.183 1449788 7434194 788.39 194.24 3671.736 1449790 7434202 790.42 202.01 5733.468 4265.343 10 Page 3 of 6 Appendix C, Table C-2 Area of Contour Lines November 14, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449803 7434211 803.26 211.14 0 1449807 7434219 806.64 219.25 5800.814 1449810 7434227 810.01 227.36 5800.814 1449810 7434234 810.01 234.11 5474.224 1449805 7434241 805.28 241.21 6855.464 1449799 7434246 799.20 245.60 5004.59 1449790 7434250 790.42 250.33 5938.579 1449782 7434253 782.31 253.04 4166.867 1449775 7434257 775.21 257.43 5232.098 1449769 7434262 768.79 262.16 5320.073 1449763 7434268 762.71 268.24 6270.61 1449757 7434274 757.30 273.99 5831.602 1449750 7434280 750.20 280.07 6550.414 1449742 7434283 741.76 282.77 4393.957 1449732 7434279 731.62 279.39 360.0792 1449728 7434272 728.24 271.62 -4741.98 1449725 7434262 724.86 262.16 -5972.38 1449722 7434254 722.16 253.71 -5414.74 1449723 7434245 722.83 245.26 -6272.06 1449723 7434238 722.83 238.17 -5129.29 1449724 7434230 723.51 230.40 -5778.76 1449725 7434220 724.86 220.26 -7645.83 1449727 7434209 726.89 209.45 -8284.56 1449731 7434199 730.61 198.63 -8638.43 1449734 7434190 734.32 190.19 -6910.28 1449740 7434180 739.73 180.39 -8224.14 1449746 7434172 746.15 171.94 -7407.16 1449751 7434166 750.88 165.86 -5351.75 1449757 7434161 756.96 161.13 -4561.01 1449766 7434160 766.42 159.77 -2547.62 1449775 7434162 774.53 162.14 517.1355 1449782 7434167 781.97 166.87 2458.767 1449787 7434174 787.04 174.30 4967.347 1449790 7434181 789.74 181.06 4847.745 1449794 7434187 794.13 187.48 4274.973 1449798 7434197 798.19 197.28 7021.771 1449803 7434211 803.26 211.14 10058.36 7133.15 5 Page 4 of 6 Appendix C, Table C-2 Area of Contour Lines November 14, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449774 7434138 773.52 138.15 0 1449781 7434149 781.29 149.30 7551.853 1449788 7434162 788.39 161.80 8708.775 1449796 7434175 795.82 174.98 9186.908 1449803 7434186 802.58 186.13 7691.669 1449808 7434196 808.33 196.27 7066.757 1449815 7434210 815.08 210.12 9872.338 1449820 7434222 820.49 221.95 8503.803 1449825 7434235 824.88 235.13 9837.802 1449829 7434247 829.28 246.95 8722.861 1449832 7434253 831.64 253.37 4740.036 1449830 7434257 829.61 256.75 3323.894 1449824 7434259 823.53 259.12 3524.005 1449816 7434258 816.43 258.44 1282.175 1449807 7434255 806.97 254.73 -589.439 1449799 7434253 799.20 253.37 888.9741 1449788 7434255 788.05 255.40 4445.723 1449778 7434260 778.25 259.79 5964.538 1449771 7434264 771.49 263.85 4911.477 1449766 7434270 766.42 270.27 6290.552 1449761 7434278 761.02 278.04 7417.805 1449758 7434284 757.64 284.12 5568.314 1449752 7434291 752.23 290.54 6400.376 1449743 7434295 742.77 295.28 6307.578 1449730 7434295 729.93 294.60 3289.517 1449721 7434286 721.48 286.49 -3430.9 1449716 7434275 716.41 275.34 -6593.14 1449716 7434265 716.08 265.20 -7169.44 1449713 7434257 713.37 257.09 -5090.33 1449711 7434244 711.35 243.91 -8879.9 1449711 7434228 711.01 228.37 -10974.6 1449715 7434216 715.06 215.53 -10055.7 1449719 7434203 718.78 203.36 -9499.65 1449723 7434194 723.17 193.90 -7694.04 1449730 7434182 730.27 182.08 -9928.77 1449735 7434165 735.34 165.18 -13261.1 1449744 7434153 744.46 152.68 -10700.7 1449751 7434145 750.88 144.57 -7017.67 1449763 7434140 762.71 139.84 -5261.99 1449774 7434138 773.52 138.15 -2800.7 11274.83 2 Page 5 of 6 Appendix C, Table C-2 Area of Contour Lines November 14, 2019 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449791 7434142 791.09 141.53 0 1449799 7434156 798.86 155.72 10127.38 1449805 7434171 804.95 171.26 11470.25 1449809 7434183 808.66 183.09 8883.363 1449815 7434194 815.08 194.24 7841.914 1449824 7434205 824.21 205.05 7041.405 1449832 7434219 831.64 218.57 9615.907 1449837 7434229 837.39 229.05 7456.021 1449845 7434237 844.82 236.82 4805.359 1449846 7434253 846.17 253.37 13668.04 1449845 7434260 845.50 259.79 5603.881 1449831 7434273 830.97 273.31 15202.86 1449810 7434272 810.35 272.30 4791.242 1449794 7434271 794.13 270.95 3321.263 1449775 7434274 775.21 273.99 7542.184 1449768 7434289 767.78 288.52 13300.69 1449754 7434304 754.26 304.06 15833.87 1449728 7434303 728.24 302.71 6891.875 1449716 7434294 716.41 294.26 -2571.89 1449709 7434280 708.64 279.73 -8122.58 1449703 7434267 702.56 266.55 -7637.37 1449703 7434254 703.24 253.71 -9201.39 1449704 7434235 704.25 235.13 -13326.8 1449706 7434222 705.94 221.61 -9916.14 1449711 7434206 710.67 206.41 -11782.8 1449715 7434192 714.72 192.21 -10922.9 1449720 7434177 720.13 177.01 -11907.2 1449727 7434161 726.89 161.46 -12389.8 1449733 7434150 732.97 150.31 -9087.62 1449746 7434135 746.15 135.11 -13126.4 1449761 7434130 761.36 130.38 -5584.25 1449780 7434130 779.60 129.70 -2893.52 1449791 7434142 791.09 141.53 7730.108 16328.44 1 Page 6 of 6 Appendix C, Table C-3 Area of Contour Lines February 19, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449745 7434249 745.03 249.29 33.8 1449761 7434235 760.70 235.01 0 20 1449761 7434242 761.39 241.97 5134.609 1449760 7434249 759.65 248.94 5724.48 1449755 7434256 754.78 255.55 6240.165 1449749 7434259 748.51 259.38 4493.331 1449742 7434257 741.89 257.29 152.2746 1449740 7434251 740.15 251.03 -4202.56 1449738 7434246 738.06 245.80 -3341.86 1449740 7434237 740.15 237.44 -6682.36 1449744 7434230 743.63 230.48 -5982.09 1449747 7434223 747.12 222.82 -6500.03 1449749 7434220 748.86 220.38 -2209.28 1449756 7434221 755.82 221.42 -752.585 1449759 7434225 759.30 225.26 1348.638 1449760 7434230 760.00 230.13 3545.122 1449761 7434235 760.70 235.01 3545.122 256.4845 20 Page 1 of 6 Appendix C, Table C-3 Area of Contour Lines February 19, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449776 7434225 775.67 224.91 0 10 1449775 7434234 774.63 233.61 6988.215 1449773 7434242 772.89 241.97 6881.163 1449771 7434248 770.80 247.54 4812.154 1449768 7434254 767.66 254.16 5876.073 1449763 7434260 763.13 260.08 5695.441 1449756 7434264 756.17 264.26 5000.639 1449747 7434266 747.46 266.35 3880.757 1449739 7434264 738.76 263.56 236.473 1449734 7434258 733.53 257.64 -2996.86 1449732 7434252 732.49 251.72 -4073.56 1449733 7434243 732.84 242.67 -6720.03 1449734 7434234 733.53 233.61 -6804.54 1449737 7434224 737.36 223.51 -8303.11 1449740 7434216 740.50 215.85 -6349.91 1449744 7434210 743.63 209.93 -5060.51 1449749 7434204 748.51 204.36 -5167.08 1449755 7434197 754.78 196.70 -7015.78 1449759 7434195 758.61 194.61 -2330.63 1449764 7434196 763.83 196.35 304.3365 1449769 7434203 768.71 202.97 4096.802 1449771 7434209 771.14 209.24 4323.886 1449774 7434217 773.93 216.90 5325.231 1449776 7434225 775.67 224.91 5821.36 2210.263 10 Page 2 of 6 Appendix C, Table C-3 Area of Contour Lines February 19, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449796 7434229 795.52 229.43 0 5 1449799 7434234 798.66 233.96 2882.443 1449800 7434240 799.70 240.23 4761.981 1449797 7434246 796.57 246.15 5487.413 1449793 7434249 793.43 248.59 2713.349 1449784 7434253 784.03 253.12 5929.527 1449777 7434257 777.41 256.60 4405.22 1449769 7434261 769.06 261.13 5664.233 1449762 7434268 761.74 267.74 6998.372 1449757 7434275 756.87 274.71 6610.957 1449751 7434280 750.95 280.28 5843.637 1449745 7434283 745.03 283.41 4013.006 1449740 7434281 740.15 281.32 -174.949 1449734 7434275 733.53 275.06 -2778.2 1449729 7434267 729.35 267.39 -4470.54 1449725 7434260 725.18 259.73 -4470.54 1449723 7434252 723.09 251.72 -5265.8 1449722 7434245 722.39 245.45 -4357.37 1449721 7434237 721.00 237.44 -5444.28 1449722 7434229 722.04 228.74 -6525.29 1449725 7434219 724.83 219.34 -7426.49 1449727 7434213 727.26 213.07 -5078.3 1449731 7434204 731.44 204.01 -7475.48 1449735 7434197 735.27 197.40 -5621.34 1449742 7434189 741.89 189.04 -7451.59 1449749 7434181 749.20 181.03 -7324.89 1449757 7434178 756.87 177.55 -3996.08 1449765 7434177 764.88 176.85 -1949.26 1449772 7434181 772.19 180.68 1636.723 1449779 7434187 779.15 187.30 3850.98 1449782 7434194 781.94 194.26 4905.039 1449785 7434203 785.42 203.32 6403.611 1449787 7434209 787.16 208.54 3748.856 1449791 7434217 791.34 216.90 5707.673 1449796 7434229 795.52 229.43 9014.72 5383.668 Page 3 of 6 Appendix C, Table C-3 Area of Contour Lines February 19, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449832 7434224 831.74 223.86 0 2 1449837 7434230 836.62 230.13 4122.353 1449841 7434238 841.49 238.49 5870.474 1449843 7434248 842.88 248.24 7873.225 1449839 7434257 838.71 256.95 8375.82 1449832 7434262 831.74 262.17 6170.865 1449822 7434265 822.34 264.96 4782.386 1449809 7434267 809.10 266.70 4938.231 1449796 7434267 795.52 266.70 3622.247 1449786 7434266 786.47 266.35 2137.789 1449777 7434266 777.07 265.65 1956.656 1449770 7434266 769.75 266.00 2213.415 1449763 7434271 763.13 270.88 5513.026 1449759 7434280 759.30 279.58 7681.758 1449759 7434284 758.61 284.46 3896.744 1449755 7434291 755.47 291.42 6175.31 1449751 7434297 750.60 296.65 5367.277 1449742 7434299 741.54 299.43 4777.193 1449732 7434298 732.49 298.39 1936.506 1449724 7434294 723.78 293.86 -718.318 1449717 7434286 717.17 286.20 -3600.88 1449713 7434280 712.99 279.93 -3299.55 1449711 7434272 710.90 271.92 -5125.96 1449709 7434265 709.16 265.30 -4230.37 1449708 7434258 708.11 257.64 -5156.06 1449708 7434249 707.76 248.59 -6321.91 1449708 7434243 708.11 242.67 -4276.73 1449709 7434233 708.81 232.57 -7320.46 1449712 7434221 711.94 221.42 -8627.94 1449714 7434212 714.03 212.37 -6908.99 1449718 7434203 718.21 202.62 -7850.07 1449723 7434194 723.09 193.91 -7240.84 1449728 7434187 728.31 186.95 -6049.29 1449735 7434180 734.58 180.33 -5990.97 1449744 7434174 743.98 174.06 -6300.36 1449753 7434171 753.38 170.58 -4227.61 1449762 7434169 762.44 168.84 -2856.37 1449773 7434170 772.54 169.88 -908.594 1449782 7434172 781.59 171.97 76.00755 1449788 7434178 788.21 178.24 3761.535 1449794 7434185 794.13 184.51 3885.681 Page 4 of 6 Appendix C, Table C-3 Area of Contour Lines February 19, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449799 7434192 798.66 191.82 4972.378 1449806 7434199 806.32 198.79 4093.017 1449812 7434205 812.24 205.41 4158.358 1449821 7434214 821.29 214.11 5211.746 1449832 7434224 831.74 223.86 5771.538 11165.13 2 Page 5 of 6 Appendix C, Table C-3 Area of Contour Lines February 19, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449781 7434157 781.24 157.35 0 1 1449790 7434166 789.95 166.40 5703.917 1449798 7434175 797.61 175.11 5602.663 1449804 7434183 803.88 182.77 5013.278 1449810 7434189 810.50 189.04 3829.815 1449820 7434195 819.90 194.61 2738.638 1449826 7434202 825.82 201.57 4558.499 1449834 7434206 834.18 206.45 2341.544 1449843 7434213 842.88 212.72 3431.666 1449848 7434225 848.11 224.56 8869.05 1449855 7434240 855.42 239.53 11058.03 1449855 7434253 855.07 253.12 11701.62 1449849 7434262 848.81 261.82 9031.204 1449841 7434268 841.49 268.09 7235.556 1449831 7434271 831.39 270.88 5051.946 1449809 7434274 809.45 273.66 8259.285 1449792 7434276 791.69 275.75 6551.853 1449777 7434277 776.72 277.49 5507.893 1449773 7434287 773.23 287.24 8540.196 1449765 7434295 764.88 294.91 8324.983 1449758 7434303 757.56 302.92 8283.247 1449740 7434308 740.50 308.14 9126.417 1449720 7434303 720.30 303.26 2613.678 1449711 7434293 710.55 292.82 -4568.24 1449705 7434280 704.98 280.28 -7276.63 1449700 7434267 700.45 266.70 -8305.98 1449700 7434258 700.45 257.99 -6098.33 1449701 7434247 701.15 247.20 -7741.62 1449701 7434235 700.80 235.01 -8460.07 1449703 7434222 702.54 222.12 -9439.23 1449706 7434210 706.02 209.58 -9581.34 1449710 7434196 709.85 196.35 -10146.1 1449718 7434184 718.21 184.16 -10293.4 1449725 7434173 725.18 173.37 -9036.37 1449737 7434162 737.36 162.22 -10194.5 1449753 7434156 752.69 155.61 -7364.73 1449765 7434155 764.88 154.56 -2683.02 1449773 7434156 772.89 155.61 -438.889 1449781 7434157 781.24 157.35 45.23978 15895.89 1 Page 6 of 6 Appendix C, Table C-4 Area of Contour Lines June 25, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449745 7434249 745.03 249.29 23.5 1449752 7434243 752.34 243.02 0 20 1449752 7434248 751.99 247.89 3752.686 1449751 7434253 750.95 253.12 4187.227 1449747 7434259 746.77 258.69 5242.079 1449741 7434261 741.20 261.47 3521.927 1449737 7434258 736.67 258.34 -1139.34 1449736 7434251 735.97 251.37 -4950.99 1449735 7434244 735.27 243.71 -5463.6 1449737 7434237 737.36 236.75 -5630.47 1449740 7434231 739.80 230.83 -4942.55 1449743 7434227 742.94 227.00 -3557.49 1449746 7434227 746.42 226.65 -1049.25 1449751 7434230 750.60 230.48 1912.192 1449752 7434236 751.99 235.70 3599.903 1449752 7434243 752.34 243.02 5417.451 449.8872 20 Page 1 of 6 Appendix C, Table C-4 Area of Contour Lines June 25, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449772 7434224 772.19 223.51 0 10 1449774 7434232 774.28 231.52 5718.051 1449771 7434243 770.80 242.67 9434.914 1449767 7434251 766.62 251.03 7456.48 1449762 7434260 761.74 260.08 8165.274 1449755 7434268 755.47 267.74 7466.455 1449753 7434276 752.69 276.45 7323.322 1449750 7434281 749.55 280.63 4011.968 1449745 7434282 745.37 282.02 2216.887 1449743 7434282 742.59 282.02 785.7155 1449737 7434277 737.36 277.15 -2147.3 1449732 7434269 732.49 269.48 -4298.12 1449730 7434263 730.05 262.52 -4444.88 1449729 7434257 729.01 256.60 -4047.85 1449729 7434250 729.35 249.63 -5166.92 1449729 7434241 729.35 241.28 -6095.99 1449731 7434233 730.75 232.92 -6432.09 1449733 7434225 732.84 225.26 -6085.34 1449736 7434219 735.97 218.99 -5299.83 1449741 7434214 740.85 214.11 -4655.93 1449746 7434210 746.07 209.93 -4214.49 1449752 7434208 752.34 207.84 -2874.9 1449758 7434209 758.26 209.24 -182.476 1449765 7434211 764.88 211.33 199.9216 1449769 7434215 768.71 215.16 2120.529 1449772 7434224 772.19 223.51 5675.61 2314.503 10 Page 2 of 6 Appendix C, Table C-4 Area of Contour Lines June 25, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449788 7434218 788.21 217.59 0 5 1449791 7434224 791.00 224.21 4609.197 1449791 7434229 791.34 228.74 3502.976 1449788 7434237 787.86 236.75 7135.093 1449781 7434245 780.90 245.11 8233.948 1449774 7434253 774.28 253.46 8148.59 1449769 7434261 768.71 261.13 7344.492 1449764 7434267 764.18 266.70 5465.455 1449759 7434273 759.30 272.62 5824.46 1449757 7434278 756.87 278.19 4895.451 1449753 7434284 753.04 284.11 5546.553 1449749 7434291 748.86 290.73 6169.989 1449744 7434296 744.33 296.30 5488.862 1449736 7434294 735.62 293.86 765.1712 1449729 7434286 728.66 285.50 -4101.62 1449724 7434278 724.48 277.84 -4389.53 1449721 7434269 721.00 269.14 -5339.95 1449719 7434260 719.26 260.08 -6059.67 1449720 7434251 719.95 250.68 -6944.17 1449721 7434241 721.34 240.58 -7620.22 1449722 7434233 722.04 232.57 -5945.39 1449726 7434222 725.52 221.77 -8604.96 1449727 7434214 727.26 214.11 -5944.8 1449732 7434204 732.14 204.36 -8135.52 1449738 7434194 738.41 194.26 -8675.16 1449748 7434188 748.16 187.64 -6780.16 1449754 7434186 753.73 185.55 -2608.85 1449758 7434186 757.91 185.55 -775.439 1449765 7434188 765.22 187.99 490.5919 1449772 7434194 771.84 194.26 3552.934 1449776 7434201 776.37 200.88 4227.641 1449783 7434208 782.64 207.84 4148.232 1449788 7434218 788.21 217.59 6473.438 5048.815 5 Page 3 of 6 Appendix C, Table C-4 Area of Contour Lines June 25, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449737 7434171 737.36 170.93 0 2 1449747 7434165 746.77 164.66 -6229.41 1449758 7434162 757.91 161.53 -4175.55 1449770 7434163 769.75 163.27 -592.834 1449777 7434168 777.07 168.49 2827 1449784 7434177 784.03 176.50 5050.595 1449791 7434185 791.00 184.51 5050.595 1449797 7434194 796.57 193.91 6409.484 1449802 7434202 801.79 201.57 5089.982 1449806 7434207 805.62 207.49 3974.649 1449809 7434218 808.76 217.94 7766.447 1449814 7434226 813.63 226.30 5697.044 1449817 7434235 817.46 234.66 5933.473 1449820 7434240 819.90 239.53 3413.523 1449823 7434246 822.69 246.15 4757.765 1449824 7434250 824.08 249.98 2808.636 1449821 7434252 820.94 252.42 2792.423 1449814 7434251 814.33 251.37 812.5194 1449806 7434251 805.97 251.37 2101.004 1449793 7434253 792.74 252.77 4449.313 1449782 7434256 781.94 256.25 5489.559 1449774 7434261 774.28 261.13 5775.652 1449770 7434265 770.10 265.30 4326.986 1449765 7434269 765.22 269.14 4243.583 1449762 7434275 762.44 275.40 5546.66 1449758 7434282 757.91 282.37 6557.252 1449756 7434289 756.17 288.99 5506.622 1449753 7434296 752.69 295.60 6009.822 1449748 7434302 748.16 301.52 5794.405 1449737 7434305 737.36 305.01 5860.675 1449728 7434299 727.96 298.74 -1754.29 1449719 7434286 718.91 286.20 -6421.58 1449715 7434275 715.42 274.71 -7265.22 1449713 7434261 712.64 261.13 -8951.44 1449712 7434248 711.94 247.89 -9248.89 1449714 7434236 714.03 236.05 -8947.78 1449716 7434225 715.77 224.91 -8368.25 1449718 7434211 717.86 211.33 -10191.5 1449720 7434200 720.30 200.18 -8515.07 1449724 7434188 724.13 188.34 -9295.62 Page 4 of 6 Appendix C, Table C-4 Area of Contour Lines June 25, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449730 7434178 730.05 178.24 -8428.26 1449737 7434171 737.36 170.93 -6642.62 9508.695 2 Page 5 of 6 Appendix C, Table C-4 Area of Contour Lines June 25, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449804 7434166 803.88 165.70 0 1 1449813 7434181 813.28 180.68 10479.9 1449820 7434193 820.25 193.22 8937.763 1449825 7434203 824.78 202.62 6837.898 1449832 7434213 831.74 212.72 6918.42 1449838 7434222 838.36 222.12 6413.188 1449842 7434234 841.84 233.96 9153.098 1449843 7434245 842.88 245.11 9137.097 1449839 7434256 839.05 255.90 10038.58 1449828 7434261 827.56 261.47 7616.15 1449811 7434264 811.19 263.56 6008.972 1449793 7434270 793.08 269.83 9857.907 1449779 7434283 778.81 283.07 14348.11 1449768 7434294 768.01 293.51 11192.56 1449761 7434303 761.05 303.26 9533.256 1449745 7434312 745.37 311.62 11113.42 1449730 7434311 729.70 310.58 4104.81 1449720 7434299 720.30 299.43 -5211.56 1449712 7434290 711.59 289.68 -4416.73 1449708 7434275 708.46 275.40 -9252.44 1449706 7434263 706.37 262.87 -8306.56 1449706 7434250 705.67 250.33 -8672.73 1449705 7434237 704.98 237.44 -8918.48 1449706 7434227 706.02 227.00 -7613.37 1449707 7434213 707.07 213.07 -10072.1 1449712 7434201 711.94 201.23 -9410.89 1449712 7434185 711.59 184.51 -11830.8 1449719 7434172 718.56 171.97 -10206.4 1449731 7434163 731.10 162.57 -8912.52 1449741 7434156 740.85 155.61 -6677.35 1449755 7434151 754.78 151.08 -5521.62 1449777 7434151 777.41 150.73 -3682.71 1449788 7434157 787.86 156.65 3027.754 1449799 7434161 799.00 161.18 1821.149 1449804 7434166 803.88 165.70 2831.495 15332.61 1 Page 6 of 6 Appendix C, Table C-5 Area of Contour Lines September 17, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449745 7434249 745.03 249.29 20.8 1449751 7434224 750.60 223.51 0 20 1449754 7434225 754.08 225.26 528.5933 1449757 7434231 756.87 230.83 3574.198 1449759 7434241 758.61 240.93 7241.905 1449759 7434249 758.61 248.59 5812.113 1449757 7434257 757.21 256.95 6686.773 1449757 7434264 756.52 263.91 5453.001 1449755 7434272 755.13 272.27 6690.654 1449752 7434280 752.34 279.58 6281.006 1449747 7434281 747.46 281.32 2673.136 1449743 7434276 742.59 276.45 -2272.68 1449737 7434270 737.02 270.18 -3114.56 1449734 7434263 734.23 263.22 -4380.62 1449734 7434257 733.53 256.95 -4419.22 1449733 7434249 732.84 249.29 -5441.04 1449733 7434241 732.84 240.58 -6380.31 1449734 7434232 733.88 232.22 -6376.44 1449739 7434224 738.76 223.86 -7266.03 1449746 7434223 746.07 223.17 -2151.72 1449751 7434224 750.60 223.51 -750.515 1194.12 20 Page 1 of 5 Appendix C, Table C-5 Area of Contour Lines September 17, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449775 7434210 775.32 209.93 0 10 1449784 7434216 783.68 215.50 2565.505 1449789 7434222 789.25 222.12 3984.663 1449791 7434230 791.34 229.78 5582.785 1449791 7434235 791.00 234.66 3938.244 1449786 7434242 786.47 242.32 7122.617 1449779 7434249 779.15 249.29 7249.946 1449773 7434254 772.54 253.81 5176.921 1449767 7434259 766.97 259.04 5449.825 1449762 7434267 762.44 267.39 7583.074 1449761 7434275 761.05 274.71 5948.425 1449757 7434282 757.21 282.02 6618.097 1449754 7434286 754.43 285.50 3422.734 1449749 7434288 749.20 287.94 3330.53 1449742 7434287 741.89 286.90 1323.063 1449737 7434284 737.02 283.76 -926.517 1449732 7434276 732.49 276.45 -4105.35 1449730 7434270 729.70 270.18 -3821.45 1449728 7434263 727.96 263.22 -4611.96 1449726 7434255 726.22 255.21 -5372.5 1449726 7434248 725.87 248.24 -4969.28 1449726 7434242 726.22 241.97 -4636.61 1449726 7434235 726.22 234.66 -5311.07 1449727 7434225 726.92 225.26 -6991.96 1449728 7434217 727.96 216.55 -6564.1 1449732 7434207 732.14 207.15 -7749.85 1449738 7434203 738.41 203.32 -4103.17 1449746 7434201 746.42 200.53 -3685.74 1449755 7434202 754.78 201.57 -896.213 1449762 7434204 762.09 203.66 102.9422 1449770 7434207 769.75 206.80 828.2149 1449775 7434210 775.32 209.93 1260.323 3871.067 10 Page 2 of 5 Appendix C, Table C-5 Area of Contour Lines September 17, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449808 7434221 808.06 221.08 0 5 1449814 7434226 814.33 225.95 2553.893 1449823 7434232 823.03 232.22 3137.441 1449831 7434241 831.04 240.93 5305.55 1449837 7434251 837.31 250.68 6593.306 1449838 7434259 837.66 258.69 6619.413 1449833 7434264 833.13 263.56 5255.197 1449823 7434265 823.03 264.61 3532.234 1449810 7434264 810.50 263.91 2744.169 1449801 7434261 801.44 260.78 -150.714 1449789 7434260 788.91 260.43 2990.285 1449777 7434262 777.41 262.17 4366.629 1449769 7434266 768.71 266.00 5260.634 1449766 7434273 765.92 272.62 5827.462 1449763 7434280 763.13 279.58 6094.196 1449759 7434288 759.30 287.59 7183.583 1449752 7434295 751.99 295.25 7920.703 1449746 7434298 746.07 298.04 3843.053 1449742 7434297 741.54 296.65 310.0294 1449735 7434294 735.27 294.21 51.83752 1449732 7434287 731.79 286.90 -4352.69 1449728 7434279 727.61 278.54 -4917.41 1449724 7434271 724.48 270.88 -4701.63 1449721 7434262 721.34 261.82 -5710.84 1449719 7434254 719.26 253.81 -5230.75 1449718 7434245 717.51 245.11 -5820.1 1449717 7434237 717.17 237.44 -5411.91 1449717 7434228 716.82 228.04 -6660.69 1449716 7434218 716.47 217.94 -7159.95 1449718 7434211 717.86 210.63 -5543.35 1449719 7434201 718.56 200.88 -7146.63 1449725 7434192 724.83 192.17 -7515.21 1449734 7434185 733.88 184.86 -7040.91 1449746 7434179 745.72 179.29 -6278.05 1449759 7434175 759.30 175.11 -5551.43 1449767 7434174 766.97 174.41 -1870.45 1449777 7434177 777.41 176.50 -219.584 1449785 7434182 785.42 181.72 2647.307 1449791 7434190 791.34 189.73 5215.227 1449795 7434199 795.17 199.14 6714.028 Page 3 of 5 Appendix C, Table C-5 Area of Contour Lines September 17, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449798 7434205 797.61 205.41 4499.135 1449802 7434213 802.14 213.07 5181.019 1449808 7434221 808.06 221.08 5163.562 8863.79 5 Page 4 of 5 Appendix C, Table C-5 Area of Contour Lines September 17, 2020 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449786 7434164 785.77 163.62 0 2 1449796 7434173 796.22 173.02 5679.083 1449803 7434185 803.18 185.21 8499.904 1449810 7434194 810.50 193.91 5638.297 1449819 7434204 818.51 203.66 6350.009 1449831 7434216 831.04 215.50 7138.247 1449841 7434229 841.49 228.74 8746.199 1449847 7434241 847.06 240.93 8982.266 1449848 7434255 847.76 254.51 11336.88 1449842 7434265 841.84 265.30 10659.04 1449828 7434276 827.56 276.10 12876.47 1449806 7434276 806.32 276.10 5865.313 1449794 7434279 794.48 279.23 5796.412 1449776 7434286 776.37 285.50 10036.92 1449768 7434297 768.01 297.00 11308.54 1449755 7434305 754.78 305.01 10081.93 1449742 7434306 742.24 306.40 4875.292 1449730 7434300 730.05 300.13 -918.122 1449722 7434290 721.69 289.68 -5118.76 1449719 7434276 718.56 276.45 -8642.65 1449716 7434265 716.47 265.30 -7430.03 1449714 7434254 714.38 253.81 -7679.54 1449710 7434241 709.50 240.58 -8216.34 1449710 7434228 709.85 228.04 -8978.9 1449710 7434213 709.50 212.72 -10797.7 1449711 7434195 711.25 194.96 -12971.8 1449718 7434180 717.51 180.33 -11625.2 1449734 7434165 733.53 164.66 -14133.3 1449751 7434160 750.60 160.13 -6130.73 1449769 7434160 769.40 160.13 -3011.39 1449786 7434164 785.77 163.62 58.43956 14137.4 2 Page 5 of 5 Appendix C, Table C-6 Area of Contour Lines November 20, 2020 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449749 7434276 749.16 275.55 38.7 1449756 7434274 755.70 273.64 0 20 1449752 7434280 752.43 279.91 5628.657 1449748 7434285 748.34 284.54 4627.706 1449744 7434288 743.71 287.54 3559.714 1449740 7434285 740.17 284.54 -1210.14 1449738 7434277 737.99 277.46 -4621.77 1449739 7434271 738.54 271.47 -4573.45 1449745 7434265 744.80 265.47 -6126.23 1449752 7434264 751.61 264.38 -2619.21 1449755 7434268 754.61 268.47 2278.71 1449756 7434274 755.70 273.64 3612.747 556.7284 20 1449760 7434268 760.33 267.92 0 10 1449758 7434277 758.42 276.91 7345.058 1449755 7434282 755.15 282.36 5036.67 1449752 7434289 751.88 288.63 5653.734 1449748 7434292 748.34 292.44 3889.171 1449742 7434293 741.80 292.98 2319.373 1449736 7434289 736.36 289.17 -1232.68 1449734 7434283 734.18 283.45 -3581.83 1449733 7434276 733.09 275.82 -5290.48 1449734 7434269 733.90 268.74 -5417.02 1449739 7434263 738.81 263.02 -5515.52 1449745 7434261 745.34 260.84 -3329.3 1449750 7434260 750.25 260.30 -1684.9 1449757 7434261 756.51 261.39 -813.289 1449759 7434264 758.69 264.38 1697.073 1449760 7434268 760.33 267.92 2254.404 1330.465 10 Page 1 of 6 Appendix C, Table C-6 Area of Contour Lines November 20, 2020 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449745 7434249 745.34 249.13 0 2.1 1449755 7434243 754.88 242.59 0 5 1449758 7434246 758.42 246.41 2019.584 1449758 7434252 758.42 251.58 3924.985 1449754 7434255 754.33 254.58 3300.247 1449749 7434256 748.89 256.48 2825.096 1449740 7434257 740.17 257.30 2847.505 1449734 7434255 734.45 255.12 -141.098 1449731 7434249 731.18 248.59 -3967.3 1449730 7434242 729.82 242.32 -4242.11 1449731 7434237 731.18 236.60 -4504.57 1449734 7434232 734.18 231.70 -4293.76 1449740 7434231 740.17 230.61 -2188.32 1449748 7434237 747.80 236.87 2878.202 1449755 7434243 754.88 242.59 2599.871 529.1665 5 1449774 7434189 773.67 188.66 0 39.6 1449785 7434202 785.38 201.74 0 20 1449785 7434207 785.38 207.18 4278.461 1449784 7434214 784.29 213.72 5359.884 1449781 7434217 780.75 216.99 3320.288 1449770 7434218 770.13 217.53 2730.363 1449762 7434215 761.69 214.54 -470.641 1449756 7434210 756.24 210.18 -2150.78 1449752 7434206 752.43 206.37 -2082.3 1449750 7434202 749.70 202.28 -2512.09 1449749 7434198 748.89 198.20 -2897.77 1449751 7434191 751.06 190.84 -5939.38 1449754 7434184 754.06 184.03 -5686.17 1449759 7434180 758.96 179.67 -4188.53 1449765 7434177 765.23 176.95 -3192.87 1449775 7434177 774.76 177.22 -1478.48 1449779 7434182 779.39 182.40 3188.943 1449782 7434188 782.12 187.57 3536.713 1449785 7434194 785.38 194.38 4712.727 1449785 7434202 785.38 201.74 5775.922 1152.147 20 Page 2 of 6 Appendix C, Table C-6 Area of Contour Lines November 20, 2020 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration Page 3 of 6 Appendix C, Table C-6 Area of Contour Lines November 20, 2020 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449800 7434210 800.37 209.64 0 10 1449803 7434217 802.82 216.72 5154.188 1449804 7434224 803.63 223.80 5508.365 1449803 7434231 803.36 231.15 5971.092 1449800 7434235 800.09 235.24 4037.833 1449794 7434239 793.83 238.51 4088.863 1449785 7434238 784.84 237.69 1495.165 1449778 7434237 778.03 236.60 763.4537 1449769 7434234 768.77 234.15 283.8622 1449759 7434231 759.24 230.61 -489.95 1449752 7434226 752.43 226.25 -1738.48 1449746 7434220 745.89 219.99 -3234.73 1449742 7434213 741.53 212.63 -4526.75 1449740 7434205 739.62 205.00 -5249.98 1449740 7434197 739.62 197.11 -5842.31 1449742 7434189 742.35 189.48 -6177.73 1449747 7434181 747.25 181.04 -7197.21 1449751 7434176 751.06 176.13 -4354 1449757 7434172 756.78 172.05 -4076.1 1449766 7434170 765.50 169.87 -3148.65 1449774 7434172 773.67 171.50 -137.014 1449781 7434175 781.03 175.04 1478.257 1449785 7434179 785.38 178.58 2002.717 1449790 7434185 790.29 184.58 3830.739 1449794 7434191 793.83 191.11 4512.63 1449797 7434197 796.55 196.83 4020.128 1449798 7434202 798.19 201.74 3583.687 1449800 7434210 800.37 209.64 5865.299 3211.687 10 Page 4 of 6 Appendix C, Table C-6 Area of Contour Lines November 20, 2020 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449788 7434171 788.38 171.23 0 5 1449796 7434177 796.28 176.95 3156.976 1449801 7434182 801.45 182.40 3422.061 1449808 7434192 808.26 191.66 6180.177 1449814 7434201 813.71 201.46 6881.506 1449818 7434210 818.07 209.91 5992.811 1449823 7434216 822.70 215.90 3930.202 1449826 7434224 825.97 224.07 6016.934 1449831 7434228 831.14 227.88 1990.066 1449835 7434237 834.96 236.60 6375.391 1449834 7434247 833.87 246.68 8672.536 1449828 7434254 828.15 254.03 7543.482 1449817 7434257 816.71 257.30 5612.981 1449805 7434258 804.72 258.12 3751.054 1449798 7434259 797.64 259.21 2704.729 1449787 7434260 786.75 260.03 3475.912 1449779 7434262 778.57 262.48 4053.418 1449770 7434265 770.13 264.93 4124.912 1449765 7434270 764.96 269.83 5146.893 1449762 7434278 761.96 277.73 6850.866 1449760 7434284 760.05 284.27 5510.56 1449758 7434289 757.87 289.17 4345.849 1449752 7434296 752.43 296.25 6942.457 1449744 7434299 744.26 298.70 4265.308 1449735 7434297 735.27 296.80 1265.867 1449730 7434289 730.09 289.17 -4071.63 1449725 7434282 725.46 281.54 -4229.15 1449722 7434272 722.19 272.28 -5798.19 1449721 7434265 721.10 265.20 -4817.82 1449721 7434257 721.10 257.03 -5892.42 1449721 7434249 721.38 249.40 -5569.6 1449721 7434239 721.10 239.05 -7398.62 1449722 7434232 722.46 232.24 -5235.92 1449724 7434224 723.83 223.53 -6613.41 1449727 7434215 726.55 214.54 -7114.99 1449729 7434208 729.00 208.00 -5275.47 1449731 7434200 731.45 199.56 -6665.43 1449735 7434191 734.72 191.11 -6828.5 1449738 7434182 738.26 182.40 -7080.67 1449745 7434173 744.80 173.14 -8029.35 Page 5 of 6 Appendix C, Table C-6 Area of Contour Lines November 20, 2020 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449752 7434168 752.43 167.96 -5174.95 1449761 7434165 761.14 164.96 -3718.38 1449771 7434166 771.49 165.51 -1292.82 1449780 7434168 780.48 167.69 193.4248 1449788 7434171 788.38 171.23 1439.063 9519.062 5 Page 6 of 6 Appendix C, Table C-7 Area of Contour Lines March 13, 2021 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449749 7434275 748.89 274.73 5.8 1449750 7434283 749.98 282.63 0 5 1449743 7434282 743.17 281.54 1107.477 1449739 7434279 738.81 278.55 -999.669 1449739 7434273 739.08 273.37 -3899.36 1449742 7434270 741.80 270.10 -3160.34 1449747 7434270 746.71 269.56 -1728.38 1449752 7434268 752.43 268.47 -2355.42 1449758 7434270 758.15 269.83 -510.909 1449761 7434275 760.87 275.28 3395.113 1449759 7434280 758.69 279.91 4123.023 1449754 7434282 754.06 281.82 2742.675 1449750 7434283 749.98 282.63 1767.589 240.8978 5 1449745 7434249 745.07 248.59 0 <2 1449749 7434257 748.61 256.76 0 2 1449743 7434254 742.62 254.31 -296.585 1449739 7434250 738.81 249.95 -2266.65 1449740 7434246 739.62 246.13 -3021.55 1449742 7434243 742.08 243.41 -2617.97 1449746 7434241 745.89 241.23 -2545.22 1449752 7434241 751.88 241.23 -1445.54 1449758 7434243 757.87 243.41 192.8359 1449761 7434247 760.60 247.22 2227.016 1449762 7434251 761.69 251.04 2631.048 1449758 7434256 757.60 256.48 5175.03 1449749 7434257 748.61 256.76 2511.777 272.0951 2 1449773 7434189 773.40 189.21 0 25.4 Page 1 of 6 Appendix C, Table C-7 Area of Contour Lines March 13, 2021 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449762 7434194 761.96 194.38 0 20 1449760 7434190 760.05 190.30 -2742.52 1449759 7434184 758.96 184.30 -4347.18 1449761 7434180 761.41 179.95 -3759.43 1449764 7434177 764.41 177.49 -2405.7 1449771 7434178 770.68 178.31 -487.325 1449777 7434181 776.94 180.76 772.1756 1449782 7434185 781.57 185.39 2760.578 1449784 7434192 783.75 191.66 4492.361 1449785 7434197 784.84 196.83 3847.265 1449783 7434201 783.48 200.92 3474.687 1449781 7434204 780.75 204.19 3108.108 1449775 7434205 775.31 205.00 1750.318 1449772 7434204 771.77 203.64 -329.98 1449767 7434200 767.13 200.10 -1789.82 1449764 7434197 763.87 197.11 -1644.43 1449762 7434194 761.96 194.38 -1704.81 497.1532 20 1449798 7434204 798.19 203.92 0 10 1449800 7434210 800.37 210.18 4556.091 1449803 7434216 802.54 216.17 4338.088 1449800 7434221 799.82 221.35 4742.155 1449794 7434226 793.83 225.98 5029.932 1449783 7434226 782.66 225.98 2523.627 1449773 7434224 773.13 223.80 448.8668 1449765 7434219 764.68 218.90 -1900.81 1449760 7434213 759.51 213.18 -3241.14 1449756 7434207 755.70 207.18 -3738.34 1449753 7434201 752.97 201.46 -3758.23 1449752 7434195 751.88 195.20 -4497.67 1449751 7434190 751.34 189.75 -3989.61 1449752 7434182 751.61 181.85 -5986.51 1449752 7434176 752.15 176.40 -4193.53 1449754 7434172 754.33 171.77 -3867.21 1449759 7434169 758.96 168.51 -3260.98 1449767 7434169 767.41 168.78 -1216.1 1449773 7434172 773.40 171.77 1287.911 1449780 7434176 779.94 175.59 1826.312 1449785 7434180 784.84 179.95 2538.149 1449789 7434184 788.93 184.30 2685.19 Page 2 of 6 Appendix C, Table C-7 Area of Contour Lines March 13, 2021 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449791 7434189 791.10 189.48 3681.258 1449793 7434194 793.28 193.56 2819.333 1449796 7434197 795.73 197.38 2550.536 1449798 7434204 798.19 203.92 4717.959 2047.631 10 Page 3 of 6 Appendix C, Table C-7 Area of Contour Lines March 13, 2021 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449815 7434208 814.53 207.73 0 5 1449818 7434215 818.34 214.54 4754.401 1449823 7434221 822.70 221.08 4414.63 1449823 7434228 822.97 227.61 5317.876 1449819 7434232 819.43 231.70 4168.382 1449812 7434236 811.81 236.06 5338.228 1449804 7434239 803.63 238.78 4140.104 1449792 7434239 792.47 239.32 3104.381 1449780 7434238 779.94 237.96 1919.353 1449770 7434234 770.13 234.15 -640.763 1449761 7434230 761.41 230.06 -1105.64 1449755 7434225 754.88 224.89 -2436.54 1449749 7434219 749.43 219.17 -3092.78 1449745 7434213 744.53 212.63 -3824.57 1449743 7434205 742.89 205.28 -5127.95 1449743 7434197 743.17 197.11 -6126.39 1449743 7434191 743.44 190.84 -4709.43 1449745 7434183 744.53 182.67 -6282.85 1449747 7434176 746.71 176.13 -5265.11 1449751 7434168 750.52 168.23 -6569.9 1449757 7434162 756.51 161.97 -5709.93 1449763 7434159 763.32 158.70 -3575.63 1449774 7434160 774.22 159.79 -897.415 1449782 7434164 782.12 163.88 1901.037 1449789 7434170 789.47 169.87 3481.539 1449793 7434176 792.74 175.59 3960.531 1449799 7434183 799.00 183.49 5161.849 1449804 7434191 804.18 190.57 4708.863 1449811 7434200 811.26 200.37 6535.936 1449815 7434208 814.53 207.73 5311.287 4426.748 5 Page 4 of 6 Appendix C, Table C-7 Area of Contour Lines March 13, 2021 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449832 7434204 831.69 203.64 0 2 1449837 7434208 837.41 207.73 2233.2 1449844 7434213 844.22 213.45 3375.436 1449849 7434222 848.85 221.62 5910.084 1449850 7434229 850.48 228.70 5649.259 1449849 7434237 849.39 237.42 7662.125 1449847 7434244 846.67 244.50 6661.985 1449842 7434250 842.04 250.49 6205.699 1449836 7434255 836.05 255.39 5629.425 1449829 7434261 829.24 260.84 6293.564 1449822 7434265 821.61 265.47 5829.105 1449815 7434271 815.07 270.65 5987.448 1449808 7434274 807.72 273.64 4432.527 1449801 7434277 800.91 277.19 4723.469 1449794 7434281 794.37 280.73 4647.97 1449786 7434284 785.93 283.99 4966.848 1449778 7434287 778.03 286.72 4383.996 1449768 7434290 767.95 289.71 5220.688 1449760 7434292 760.05 291.62 3752.688 1449751 7434291 751.06 291.08 2207.206 1449745 7434288 744.80 288.35 -222.229 1449739 7434285 738.81 284.54 -1112.25 1449735 7434280 734.99 280.18 -2134.74 1449732 7434275 732.00 274.73 -3164.48 1449728 7434268 728.18 267.65 -4136.27 1449727 7434261 727.37 261.11 -4541.52 1449727 7434253 727.10 253.22 -5674.37 1449728 7434246 727.91 245.86 -5554.16 1449728 7434238 727.64 238.24 -5484.56 1449728 7434229 728.46 229.25 -6735.09 1449729 7434218 729.27 217.81 -8520.85 1449730 7434210 730.09 209.91 -5938.53 1449731 7434202 730.91 201.74 -6137.39 1449733 7434195 732.54 194.93 -5306.82 1449735 7434186 734.99 185.67 -7261.87 1449739 7434177 738.81 176.95 -7114.33 1449743 7434170 743.44 169.87 -6051.5 1449748 7434162 747.80 161.70 -6815.23 1449753 7434155 753.24 155.43 -5565.6 1449760 7434151 759.78 151.07 -4298.77 Page 5 of 6 Appendix C, Table C-7 Area of Contour Lines March 13, 2021 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449767 7434150 767.41 149.98 -1979.98 1449774 7434149 773.94 149.17 -1607.54 1449783 7434154 782.66 154.07 2494.365 1449790 7434159 790.29 159.24 2875.408 1449795 7434166 795.46 165.78 4342.076 1449800 7434173 800.09 172.59 4649.056 1449803 7434177 802.82 177.22 3234.694 1449808 7434182 807.99 182.40 3237.591 1449813 7434188 813.17 187.84 3457.672 1449819 7434193 819.16 193.02 3082.686 1449826 7434199 826.24 199.01 3541.755 1449832 7434204 831.69 203.64 2741.739 12035.84 2 Page 6 of 6 Appendix C, Table C-8 Area of Contour Lines June 18, 2021 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449744 7434249 744.41 249.24 39 1449753 7434254 753.36 253.72 0 20 1449745 7434255 745.45 255.09 3045.859 1449740 7434250 739.60 249.93 -2356.13 1449743 7434221 743.38 221.02 -22330.5 1449747 7434204 747.17 204.50 -13118.9 1449754 7434189 754.05 189.01 -12980.9 1449760 7434184 759.56 183.84 -4934.17 1449766 7434181 765.76 181.43 -2969.14 1449775 7434185 775.05 184.53 686.0288 1449778 7434191 777.80 191.42 4827.396 1449780 7434197 780.21 197.27 4090.113 1449778 7434201 777.80 201.05 3429.399 1449768 7434231 767.82 231.34 25566.67 1449753 7434254 753.36 253.72 20523.24 1739.495 20 1449757 7434260 757.15 260.26 0 10 1449743 7434261 743.38 261.29 4365.141 1449737 7434255 736.84 255.44 -2641.1 1449735 7434234 734.78 233.75 -15450.9 1449736 7434220 736.50 219.98 -10518.9 1449743 7434205 743.04 204.84 -12593 1449746 7434189 746.48 189.01 -12469.9 1449751 7434182 751.30 181.78 -6306.6 1449759 7434178 759.22 177.99 -4283.71 1449770 7434179 769.89 179.37 -853.936 1449776 7434182 775.74 182.12 1070.411 1449784 7434188 783.65 188.32 3364.438 1449791 7434198 791.23 197.96 6126.643 1449797 7434212 796.73 211.72 9803.614 1449798 7434227 797.77 226.87 11847.97 1449792 7434234 792.26 234.10 7015.954 1449783 7434237 783.31 236.85 4276.62 1449772 7434244 771.61 244.42 8703.509 1449765 7434255 765.07 255.09 9831.875 1449757 7434260 757.15 260.26 5969.622 3628.863 10 Page 1 of 3 Appendix C, Table C-8 Area of Contour Lines June 18, 2021 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449814 7434241 813.94 241.33 0 5 1449807 7434250 806.72 250.27 9028.659 1449796 7434255 796.05 255.09 6558.014 1449778 7434263 778.15 263.01 10867.95 1449757 7434266 757.15 266.45 8200.75 1449743 7434265 743.04 265.42 2978.44 1449734 7434260 734.09 260.26 -1461.03 1449733 7434252 732.71 251.65 -5958.61 1449733 7434242 733.06 241.67 -7400.54 1449732 7434229 731.68 229.28 -8750.88 1449733 7434214 732.71 213.79 -11569.9 1449736 7434201 736.15 201.40 -9815.23 1449741 7434185 740.63 185.22 -12810.5 1449749 7434177 748.89 176.96 -7648.4 1449760 7434173 759.56 172.83 -4981.49 1449777 7434175 777.46 175.24 -1263.28 1449786 7434179 786.06 179.37 1703.325 1449796 7434196 796.05 196.23 11467.38 1449809 7434220 808.78 219.98 16407.09 1449814 7434241 813.94 241.33 16124.24 5838.004 5 1449783 7434170 782.62 169.73 0 2 1449806 7434193 806.03 192.79 14075.97 1449819 7434217 819.11 216.54 16621.64 1449830 7434239 830.47 238.92 15866.56 1449835 7434259 834.94 258.54 15224.48 1449827 7434268 826.68 267.83 9895.334 1449816 7434274 816.01 273.68 7695.169 1449796 7434271 796.39 270.93 3122.541 1449779 7434271 778.84 270.93 4755.993 1449767 7434279 766.79 278.84 9429.766 1449763 7434286 763.35 286.42 6766.33 1449761 7434290 760.59 289.51 3153.442 1449753 7434295 753.02 294.68 6119.364 1449740 7434293 739.94 293.30 2817.562 1449733 7434288 732.71 287.79 -1955 1449730 7434278 730.30 278.50 -6116.1 1449723 7434257 723.42 257.16 -13668 1449725 7434231 724.79 231.34 -19029.5 1449727 7434211 727.20 210.69 -15526.1 1449730 7434194 729.61 194.17 -12522.4 1449737 7434177 736.84 176.61 -14211.5 1449748 7434167 747.51 167.32 -8732.44 1449765 7434165 764.72 165.26 -4423.44 1449783 7434170 782.62 169.73 464.0266 9911.811 2 Page 2 of 3 Appendix C, Table C-8 Area of Contour Lines June 18, 2021 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449775 7434154 774.70 154.24 0 1 1449806 7434181 806.03 181.09 15968.09 1449836 7434216 835.63 215.85 22660.86 1449849 7434254 849.05 253.72 28741.54 1449854 7434275 853.53 275.06 16984.16 1449827 7434298 827.37 297.78 26585.54 1449785 7434306 785.03 306.38 19726.67 1449741 7434315 741.32 314.64 19878.26 1449715 7434284 715.16 284.01 -14478.8 1449716 7434263 715.50 263.35 -14867.5 1449716 7434229 715.85 228.93 -24718.6 1449716 7434197 716.19 196.92 -22993.9 1449724 7434166 723.76 165.94 -23677.7 1449734 7434149 734.09 149.42 -13671.5 1449755 7434145 755.43 144.95 -6473.61 1449775 7434154 774.70 154.24 4226.686 16945.08 1 Page 3 of 3 Appendix C, Table C-9 Area of Contour Lines September 14, 2021 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449773 7434189 773.40 189.21 15.5 1449771 7434219 771.49 218.90 0 10 1449764 7434221 763.87 220.80 3140.417 1449757 7434218 756.51 218.08 -456.779 1449754 7434212 753.52 211.81 -4085.95 1449753 7434205 752.70 205.00 -4957.99 1449754 7434197 753.79 196.83 -6373.96 1449757 7434190 757.06 189.75 -5981.6 1449760 7434184 760.05 184.30 -4692.67 1449765 7434182 764.68 182.40 -2302.57 1449770 7434182 769.59 181.58 -1519.12 1449777 7434184 776.67 183.76 391.0318 1449782 7434188 781.84 187.57 2010.692 1449785 7434194 785.11 193.56 4071.997 1449785 7434202 784.57 201.74 6520.912 1449782 7434208 781.84 208.27 5678.3 1449778 7434213 778.03 213.18 4627.467 1449771 7434219 771.49 218.90 5843.876 957.0254 10 Page 1 of 4 Appendix C, Table C-9 Area of Contour Lines September 14, 2021 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449790 7434185 789.74 184.58 0 5 1449794 7434191 793.83 191.39 4623.63 1449799 7434201 798.73 201.19 6845.693 1449801 7434211 800.64 210.72 7230.94 1449802 7434221 802.00 220.53 7563.813 1449802 7434230 802.00 230.34 7864.153 1449800 7434236 800.09 235.78 4808.146 1449797 7434240 797.10 240.41 4411.249 1449791 7434243 790.83 242.87 3460.151 1449782 7434244 781.84 244.50 3475.448 1449774 7434249 773.67 248.59 5192.284 1449768 7434254 768.50 253.76 5290.409 1449766 7434258 766.05 258.39 4180.569 1449762 7434264 761.69 264.38 5716.511 1449758 7434274 757.87 273.92 8269.575 1449755 7434280 755.15 280.18 5493.979 1449754 7434284 753.52 283.99 3337.525 1449749 7434285 749.43 285.36 2186.532 1449746 7434285 745.62 284.81 679.8973 1449740 7434280 740.44 279.91 -2181.68 1449737 7434272 737.45 272.28 -4808.42 1449736 7434266 735.54 265.75 -4301.62 1449734 7434259 733.63 258.66 -4702.31 1449734 7434252 734.45 252.40 -4807.38 1449736 7434244 735.54 243.96 -6476.52 1449737 7434237 736.90 237.42 -5140.55 1449739 7434229 739.08 229.25 -6538.86 1449741 7434222 740.99 222.44 -5469.86 1449743 7434216 742.62 215.90 -5207.44 1449745 7434210 744.80 209.91 -4920.51 1449747 7434202 747.25 202.01 -6397.76 1449749 7434195 749.16 195.20 -5473.57 1449754 7434187 753.52 187.30 -6768.31 1449758 7434180 757.60 180.22 -6101.56 1449763 7434175 762.78 174.77 -5059.78 1449768 7434173 768.22 173.41 -1990.91 1449774 7434173 773.94 172.59 -1619.64 1449782 7434176 781.84 175.59 955.5737 1449786 7434180 786.20 179.95 2642.112 1449790 7434185 789.74 184.58 3003.298 4632.405 5 Page 2 of 4 Appendix C, Table C-9 Area of Contour Lines September 14, 2021 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449798 7434185 798.46 185.12 0 2 1449803 7434195 802.82 194.65 6805.175 1449809 7434207 809.35 207.46 9005.071 1449816 7434220 815.62 220.26 9061.578 1449821 7434231 821.34 231.43 7848.616 1449825 7434240 825.42 240.14 6213.384 1449829 7434250 829.24 249.68 6953.281 1449828 7434256 828.42 255.94 5398.978 1449826 7434259 825.97 259.48 3560.804 1449823 7434262 823.25 261.66 2506.594 1449816 7434261 816.44 261.11 1333.301 1449807 7434259 806.63 258.94 781.3638 1449792 7434257 792.47 257.30 2349.247 1449781 7434259 780.75 258.66 4092.865 1449772 7434262 771.77 261.93 4876.95 1449765 7434268 765.23 268.20 6547.193 1449761 7434277 761.41 276.91 7692.574 1449758 7434287 757.60 286.99 8729.545 1449756 7434293 756.24 292.71 4724.32 1449751 7434296 750.79 296.25 4272.373 1449746 7434298 745.89 298.16 2883.982 1449742 7434297 742.35 296.80 39.93522 1449737 7434293 737.45 292.98 -1375.67 1449733 7434287 732.82 287.26 -2861.53 1449730 7434281 730.36 281.27 -3687.09 1449729 7434273 729.00 273.10 -5585.03 1449729 7434265 728.73 265.47 -5485.45 1449728 7434258 728.46 257.57 -5683.94 1449730 7434250 729.55 250.49 -5439.48 1449729 7434240 729.27 239.87 -7681.61 1449731 7434231 731.18 230.61 -7211.1 1449733 7434221 733.09 221.35 -7211.1 1449735 7434214 735.27 214.27 -5673.96 1449737 7434205 737.17 205.00 -7217.78 1449740 7434197 740.44 197.38 -6292.23 1449743 7434190 743.44 189.75 -6238.46 1449748 7434181 747.52 181.04 -7255.19 1449752 7434173 751.88 173.41 -6490.06 1449759 7434167 758.69 166.87 -6095.97 1449768 7434165 768.50 165.24 -2876.2 1449778 7434165 778.03 165.24 -1575.26 1449785 7434169 785.11 168.51 1372.848 1449790 7434173 790.01 173.41 3023.122 1449792 7434179 792.47 179.13 4093.773 1449798 7434185 798.46 185.12 3675.341 7952.559 2 Page 3 of 4 Appendix C, Table C-9 Area of Contour Lines September 14, 2021 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449814 7434201 813.98 200.92 0 1 1449822 7434213 821.88 212.63 7946.6 1449828 7434220 828.15 219.71 4488.4 1449835 7434231 834.69 230.88 7812.12 1449839 7434244 838.77 243.68 9742.215 1449842 7434255 841.77 255.12 8865.39 1449839 7434263 838.77 263.29 7642.81 1449834 7434268 834.41 268.47 5488.281 1449825 7434270 825.15 270.38 4077.214 1449815 7434270 814.80 270.10 2573.755 1449799 7434272 799.28 272.28 5969.021 1449788 7434276 787.84 276.10 6162.797 1449775 7434280 775.31 280.45 6892.791 1449769 7434287 769.04 286.72 6614.065 1449765 7434294 764.96 293.53 6408.237 1449759 7434298 759.24 298.43 5429.433 1449750 7434303 750.25 302.52 5784.471 1449739 7434301 739.35 301.43 2478.571 1449732 7434296 731.73 295.71 -1930.2 1449725 7434288 724.64 287.54 -3885.06 1449721 7434276 720.56 276.10 -7115.11 1449721 7434265 720.83 265.47 -7729.56 1449721 7434256 720.56 256.48 -6406.9 1449722 7434244 721.65 244.50 -8915.13 1449722 7434236 722.46 236.06 -6293.22 1449724 7434226 724.10 225.71 -7863.61 1449725 7434214 725.46 214.27 -8591.05 1449727 7434203 727.10 203.37 -8254.21 1449727 7434194 726.55 193.56 -7018.87 1449730 7434184 729.55 184.30 -7308.48 1449736 7434174 735.54 173.68 -8854.26 1449742 7434163 742.35 162.79 -9196.53 1449752 7434156 751.88 155.70 -6809.11 1449769 7434151 769.04 151.07 -6153.43 1449782 7434153 781.57 152.71 -636.042 1449790 7434157 790.01 157.34 2329.604 1449796 7434164 795.73 163.60 4049.267 1449803 7434173 802.54 172.86 6255.184 1449806 7434183 806.36 183.49 7866.101 1449809 7434193 809.08 193.02 7187.47 1449814 7434201 813.98 200.92 5444.606 12273.81 1 Page 4 of 4 Appendix C, Table C-10 Area of Contour Lines March 29, 2023 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449774 7434189 773.67 188.66 18.53 1449775 7434184 774.76 184.30 0 15 1449782 7434189 781.57 189.21 2543.516 1449782 7434195 782.39 195.20 4528.848 1449780 7434202 779.66 202.28 6072.464 1449770 7434211 770.13 211.27 8936.451 1449763 7434221 763.05 221.08 9047.846 1449759 7434230 758.69 230.34 8030.003 1449753 7434239 752.70 238.78 7786.479 1449750 7434246 750.25 245.86 5915.873 1449747 7434250 746.71 249.68 3731.516 1449743 7434246 742.89 245.86 -1895.34 1449745 7434234 745.07 234.42 -9034.41 1449749 7434224 748.89 224.34 -8402.81 1449754 7434212 754.33 212.09 -10401.3 1449757 7434203 757.33 203.10 -7415.8 1449759 7434196 759.24 196.02 -5750.55 1449763 7434191 762.50 191.11 -4363.1 1449765 7434186 765.23 186.21 -4258.99 1449770 7434184 769.59 183.76 -2687.42 1449775 7434184 774.76 184.30 -531.754 1851.508 15 Page 1 of 5 Appendix C, Table C-10 Area of Contour Lines March 29, 2023 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449769 7434225 769.04 224.62 0 10 1449765 7434229 765.23 229.25 4417.55 1449760 7434236 759.78 236.33 6668.1 1449755 7434244 755.42 243.68 6617.564 1449752 7434250 752.15 250.22 5734.781 1449748 7434255 747.80 255.12 4778.17 1449742 7434256 742.08 256.48 2477.72 1449739 7434254 739.08 254.31 -848.54 1449737 7434246 736.90 245.59 -5887.8 1449738 7434239 737.99 238.51 -5486.22 1449739 7434230 738.54 230.34 -6160.34 1449740 7434224 739.62 223.80 -5078.85 1449742 7434215 741.80 214.54 -7337.27 1449745 7434206 745.34 206.37 -6821.24 1449749 7434198 749.43 198.20 -6933.66 1449754 7434192 754.06 191.66 -5816.85 1449760 7434186 759.51 186.21 -5151.9 1449764 7434183 763.87 183.49 -2880.27 1449771 7434180 771.22 179.67 -4262.28 1449779 7434183 778.57 182.67 989.3516 1449784 7434185 784.02 185.12 913.5038 1449788 7434188 787.84 188.39 1856.7 1449791 7434195 791.38 195.47 4912.284 1449791 7434200 791.38 200.10 3664.439 1449790 7434205 790.01 204.73 3936.958 1449782 7434209 781.84 209.36 5331.083 1449777 7434215 776.94 214.81 5285.644 1449769 7434225 769.04 224.62 9315.224 2116.926 10 Page 2 of 5 Appendix C, Table C-10 Area of Contour Lines March 29, 2023 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449803 7434221 802.82 220.80 0 5 1449803 7434226 803.09 225.98 4094.612 1449801 7434232 801.45 231.70 4962.966 1449798 7434236 797.64 236.06 4376.343 1449789 7434241 788.65 240.96 6032.509 1449779 7434246 778.57 245.86 6295.038 1449766 7434255 766.05 254.85 10078.77 1449757 7434261 756.78 260.84 6950.569 1449748 7434266 747.80 266.02 6261.122 1449741 7434266 740.71 265.75 1680.222 1449735 7434263 735.27 263.29 -368.127 1449731 7434258 731.18 257.57 -3129.97 1449731 7434251 730.64 251.04 -4639.5 1449730 7434243 729.55 242.59 -5895.82 1449730 7434235 730.09 234.97 -5696.14 1449731 7434228 731.18 227.88 -5426.42 1449733 7434218 733.36 218.08 -7666.3 1449737 7434210 736.90 209.91 -6764.78 1449740 7434202 740.44 202.01 -6564.07 1449745 7434194 744.53 194.11 -6674.11 1449748 7434188 748.34 188.39 -4998.88 1449754 7434182 754.06 182.40 -5561.91 1449760 7434179 759.78 179.13 -3508 1449768 7434175 768.50 175.32 -4458.6 1449778 7434175 778.03 174.77 -2089.98 1449787 7434180 787.02 179.67 2243.626 1449793 7434186 793.01 185.94 3853.801 1449795 7434192 794.92 191.66 4181.488 1449798 7434200 797.64 200.10 6190.073 1449799 7434207 799.28 206.91 5104.518 1449803 7434221 802.82 220.80 10370.39 4616.714 5 Page 3 of 5 Appendix C, Table C-10 Area of Contour Lines March 29, 2023 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449815 7434237 814.80 236.60 0 2 1449814 7434244 814.26 243.96 6121.154 1449811 7434249 811.26 249.13 4944.892 1449805 7434253 804.72 252.94 4722.191 1449797 7434253 796.82 253.49 2436.388 1449786 7434255 785.93 255.39 4281.08 1449778 7434258 778.03 257.57 3729.942 1449772 7434261 771.77 261.11 4368.593 1449766 7434265 765.77 265.47 4928.111 1449757 7434269 757.06 269.01 5025.463 1449750 7434273 749.98 272.83 4792.026 1449740 7434274 739.62 273.64 3436.718 1449732 7434270 731.73 270.38 -255.984 1449726 7434266 726.28 265.75 -1915.33 1449724 7434261 723.83 261.11 -2711.55 1449723 7434255 722.74 254.58 -4447.25 1449722 7434246 722.46 246.41 -5836.43 1449723 7434237 723.01 236.87 -7021.71 1449724 7434230 724.10 229.79 -5378.34 1449726 7434221 726.28 220.53 -7206.55 1449728 7434210 728.46 210.45 -7800.02 1449732 7434201 732.00 201.19 -7491.38 1449737 7434193 736.63 192.75 -7112.44 1449742 7434185 742.08 184.85 -6868.66 1449747 7434179 747.25 178.58 -5605.55 1449752 7434174 752.43 174.23 -4180.79 1449761 7434171 761.14 170.96 -3977.93 1449769 7434170 769.04 169.60 -2386.99 1449777 7434171 777.49 170.68 -594.139 1449784 7434173 784.02 172.59 366.6134 1449791 7434177 790.83 176.68 2028.02 1449794 7434180 794.37 179.95 1959.279 1449798 7434186 798.46 186.21 4241.337 1449804 7434194 803.91 193.84 5075.158 1449807 7434200 806.63 200.37 4727.259 1449809 7434208 809.08 208.00 5660.677 1449812 7434215 811.81 215.08 5163.266 1449813 7434223 812.89 222.71 5957.011 1449815 7434237 814.80 236.60 10867.6 7020.869 2 Page 4 of 5 Appendix C, Table C-10 Area of Contour Lines March 29, 2023 sampling date 1449000 7434000 SIMPLE Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449777 7434160 776.94 159.52 0 1 1449789 7434165 788.93 165.24 2532.316 1449800 7434174 800.09 174.23 5245.989 1449809 7434184 809.35 184.03 6231.966 1449812 7434196 812.08 195.74 8978.164 1449816 7434209 815.62 209.36 10366.57 1449819 7434222 819.43 221.62 9198.753 1449824 7434234 824.33 234.15 9180.491 1449829 7434244 828.69 244.50 7511.787 1449831 7434254 830.87 254.03 7367.404 1449828 7434263 828.42 263.02 8091.068 1449822 7434267 822.43 266.56 4509.508 1449812 7434267 811.81 266.83 3055.66 1449803 7434267 802.82 266.83 2398.457 1449791 7434267 790.83 267.11 3416.614 1449779 7434266 778.85 265.75 2124.173 1449770 7434268 770.13 268.47 4437.705 1449763 7434275 763.32 274.73 6652.814 1449757 7434283 756.78 282.63 7825.463 1449749 7434288 748.61 288.35 6638.301 1449743 7434289 742.62 289.17 2339.637 1449734 7434289 733.90 289.17 2520.453 1449727 7434285 727.37 285.36 -908.273 1449721 7434275 720.83 274.73 -5861.28 1449720 7434269 720.01 269.01 -3898.64 1449718 7434261 717.56 261.11 -5027.93 1449717 7434254 717.29 254.03 -5010.56 1449717 7434246 717.02 245.86 -5792.07 1449718 7434239 717.56 238.51 -5407.07 1449717 7434230 717.29 229.79 -6189.42 1449719 7434221 718.92 221.35 -6432.18 1449721 7434210 720.83 210.18 -8450.67 1449725 7434200 724.64 200.37 -7869.72 1449730 7434194 729.82 193.56 -5971.44 1449733 7434186 733.09 185.94 -6198.75 1449736 7434179 736.08 179.40 -5349.39 1449743 7434172 742.62 172.05 -6586.12 1449752 7434166 752.43 166.05 -6137.09 1449760 7434161 760.33 161.42 -4795.75 1449770 7434160 769.86 159.79 -2781.49 1449777 7434160 776.94 159.52 -1341.31 10307.08 1 Page 5 of 5 Appendix C, Table C-11 Area of Contour Lines March 28, 2023 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449774 7434189 773.94 189.21 14.5 1449781 7434185 781.30 184.85 0 10 1449782 7434188 782.12 188.39 2615.485 1449781 7434194 781.30 193.56 4201.563 1449779 7434197 779.12 197.38 3401.128 1449776 7434202 776.12 201.74 3986.847 1449773 7434205 772.58 205.00 3251.142 1449768 7434205 767.95 205.28 1159.702 1449762 7434204 761.96 203.92 184.2201 1449759 7434200 758.96 199.83 -2502.17 1449759 7434194 759.24 193.56 -4809.14 1449763 7434187 762.78 186.76 -5855.42 1449767 7434184 766.59 183.76 -2997.57 1449771 7434181 770.68 181.31 -2630.02 1449776 7434180 775.58 180.22 -1728.59 1449778 7434181 777.76 181.31 452.3062 1449781 7434185 781.30 184.85 2111.995 420.7365 10 Page 1 of 4 Appendix C, Table C-11 Area of Contour Lines March 28, 2023 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449788 7434185 788.11 185.12 0 5 1449790 7434191 790.01 191.11 4369.666 1449791 7434197 790.83 197.38 4793.072 1449788 7434205 788.11 205.28 6784.418 1449786 7434210 786.20 210.18 4255.363 1449783 7434214 782.66 214.27 3956.419 1449777 7434217 777.21 216.99 3299.045 1449772 7434219 771.77 218.62 2452.256 1449767 7434219 767.41 218.62 952.7797 1449762 7434217 761.96 216.72 -272.211 1449758 7434215 757.60 214.54 -715.871 1449754 7434210 754.33 209.91 -2806.81 1449752 7434204 752.43 204.46 -3709.08 1449752 7434199 752.15 198.74 -4248.17 1449753 7434192 752.97 192.48 -4874.45 1449755 7434188 754.61 187.84 -3801.16 1449757 7434182 757.06 182.40 -4571.28 1449761 7434179 760.87 178.86 -3376.23 1449767 7434176 766.59 176.40 -2888.27 1449772 7434175 772.04 175.32 -1796.2 1449778 7434177 778.03 176.95 211.1738 1449783 7434180 782.93 180.49 1887.403 1449788 7434185 788.11 185.12 2691.262 1296.56 5 Page 2 of 4 Appendix C, Table C-11 Area of Contour Lines March 28, 2023 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449797 7434185 797.10 184.58 0 2 1449799 7434190 799.00 190.02 3990.341 1449800 7434198 800.37 197.65 5834.919 1449800 7434205 799.55 205.00 6047.604 1449797 7434213 797.37 213.45 7197.924 1449792 7434222 791.92 221.62 7678.406 1449787 7434225 787.29 225.43 4046.053 1449779 7434230 778.85 229.79 5334.587 1449772 7434231 771.77 231.15 2688.067 1449764 7434229 763.87 228.97 144.1758 1449757 7434225 756.78 225.16 -1291.3 1449752 7434220 751.61 219.99 -2751.27 1449748 7434214 747.52 214.27 -3400.4 1449746 7434207 745.62 206.91 -5088.95 1449745 7434200 745.07 199.56 -5370.74 1449746 7434192 746.16 191.66 -6102.76 1449749 7434185 749.43 184.58 -5910.67 1449755 7434177 754.61 177.22 -6466.73 1449760 7434173 760.05 172.86 -4254.07 1449767 7434170 767.13 169.60 -3708.48 1449773 7434169 773.13 168.78 -1643.13 1449781 7434169 780.75 169.32 -866.041 1449786 7434173 786.47 173.41 2221.403 1449791 7434176 791.10 175.86 1125.017 1449794 7434180 794.37 180.49 3088.369 1449797 7434185 797.10 184.58 2753.95 2648.133 2 1449745 7434249 745.07 249.40 0 0.51 1449751 7434240 750.79 239.60 0 1 1449758 7434244 757.60 243.96 1640.477 1449760 7434251 760.05 250.76 4560.853 1449757 7434256 756.78 256.21 4960.105 1449753 7434259 752.97 259.21 3244.482 1449745 7434259 744.53 258.66 1778.51 1449740 7434254 739.62 253.76 -2382.11 1449738 7434248 738.26 248.04 -3885.04 1449742 7434242 742.35 241.50 -5839.53 1449751 7434240 750.79 239.60 -3454.61 311.5646 1 Page 3 of 4 Appendix C, Table C-11 Area of Contour Lines March 28, 2023 sampling date 1449000 7434000 COMPLEX Raw Coodinates Adjusted Coordinates Cross X Y X Y Product Area Concentration 1449804 7434178 804.18 178.04 0 1 1449807 7434186 807.45 186.48 6208.377 1449809 7434194 808.81 194.38 6124.072 1449811 7434202 810.72 201.74 5577.573 1449811 7434211 811.26 210.72 7177.255 1449811 7434219 810.72 218.62 6522.959 1449809 7434226 808.81 225.98 6379.057 1449806 7434233 806.36 233.33 6502.16 1449802 7434240 802.27 240.14 6444.219 1449797 7434246 797.37 246.41 6203.403 1449791 7434252 791.38 252.13 6037.493 1449785 7434257 784.84 256.76 5312.62 1449779 7434260 779.39 260.30 4177.78 1449773 7434264 773.40 264.11 4531.871 1449769 7434269 769.31 268.74 4660.276 1449766 7434274 765.50 274.19 5215.714 1449761 7434280 761.41 280.45 5915.919 1449757 7434286 757.06 286.17 5577.52 1449752 7434289 751.88 289.44 3955.5 1449745 7434292 745.34 292.44 4144.894 1449738 7434290 738.26 289.99 243.8631 1449733 7434285 733.36 285.08 -2197.82 1449732 7434279 732.00 278.55 -4405.81 1449731 7434268 731.45 268.20 -7424.76 1449731 7434257 730.91 256.76 -8221.69 1449732 7434246 731.73 246.41 -7775.03 1449732 7434234 731.73 233.60 -9367.45 1449733 7434220 732.82 220.26 -10020.6 1449734 7434210 734.45 210.45 -7545.71 1449736 7434200 736.36 199.83 -8203.19 1449739 7434190 738.81 190.30 -7509.77 1449742 7434180 742.08 180.22 -8067.74 1449750 7434169 749.98 169.32 -9508.61 1449759 7434163 759.24 163.06 -6266.49 1449772 7434160 772.04 160.33 -4155.46 1449783 7434162 782.93 162.24 -274.861 1449792 7434166 791.65 166.33 1784.711 1449799 7434173 799.00 172.59 3736.267 1449804 7434178 804.18 178.04 3459.453 7473.99 1 Page 4 of 4